Thursday, March 17, 2011

India pioneers volunteer-led assessment of educational standards

MDG : India schools : Indian school girl writes on a slate
Around 95% of primary-age children in India attend school – but how does achievement compare with access? Photograph: Noah Seelam/AFP/Getty Images

Here's a very clever idea. The background is that over the last decade, education policy in the developing world has been dominated by the issue of access. Getting kids into school was the priority and all themillennium development goals relating to education were about access, for example, gender parity. The result, as has been well reported, is asharp rise in enrolment rates across many African and Asian countries.

But the problem has been a widespread, but largely anecdotal, perception that educational achievement has fallen. In my visits to Uganda in the last few years, I kept on hearing complaints about overcrowded schools, a lack of textbooks and poor teacher-children ratios. Despite pledges of increased funding for education from international donors to support improved access, the money often didn't seem to percolate down to the schools where it was needed.

This is also the story in India. Enrolment rates are now running at about 95%, and a new tax has been introduced to pay for universal primary education. But Rukmini Banerji, director of an NGO, Pratham, discovered disturbing signs that children didn't seem to benefiting. The children may have been at school, but what were they actually learning​? No one seemed to know. The only assessment the government carried out was a national sample once every three to four years, but it didn't cover all educational districts.

So six years ago, Pratham took on the enormous task of finding out what Indian children were learning. The results were horrifying. Some 50% of children after five years in school could not read at the level expected after two years of schooling; millions of children were falling behind and being consigned to educational failure (all the international studies show that once kids fall behind – fail to learn the alphabet properly, for example – it is very difficult for them to catch up). In bald figures, of India's 200 million children, 195 million are now in school but fewer than 100 million are actually learning to read and do basic maths. They may be in school for five hours a day, but it is not doing them or the country much good.

Pratham's annual status education report, Aser, is conducted across all 600 educational districts of India and assesses 700,000 children every year. What it has exposed over the last six years is that in some states, schools may be well-funded but they have failed to translate that into effective education. Tamil Nadu, for example, has found to its embarrassment that it is significantly underperforming poorer states; Gujarat, which prides itself on its business acumen, discovered real gaps in its children's numeracy achievement. In many districts, the survey has provoked intense debate about educational achievement.

One of the strengths of the Aser programme, explains Banerji on a visit to London last week, is that it puts information in the hands of citizens and helps engage the whole community in educational issues.

What is really intriguing is that here is a massive, national-scale assessment exercise that has traditionally been understood in the west to be the job of the state, that is being done at a fraction of the cost by engaging an army of volunteers. In every district, Pratham works with a partner institution such as a university or women's group. Volunteers are recruited and trained for two days and then spread out to dozens of villages to visit children in their homes to conduct the simple tests. They also visit the schools to check on the basics, such as whether teachers are present (a perennial problem in developing countries, where teacher salaries are so low that they often have other jobs), and if there is a supply of textbooks and water.

There are several spin-off benefits from this. It broadens engagement in education through its 25,000 volunteers; it helps engage parents (many of whom are illiterate) in the educational process so that they can be more confident about monitoring what their children are learning, and whether the teacher is really doing their job.

Such has been the success of the programme that it has inspired a version, Uwezo, in three east African countries, Uganda, Kenya and Tanzania. Uwezo has prompted bitter controversy since it started two years ago, particularly in Uganda because it is exposing poor educational standards. Tanzania has just launched this year's surveywith a bold bid to maintain the momentum for improved education. Pakistan has now adopted a version of the scheme and plans are in place to take the model to west Africa as well.

It's been nicknamed the "rickshaw method". In the UK, the prime minister, David Cameron, might be tempted to claim the idea as an instance of the "big society". It offers an alternative to the European social democratic model of the big state, and it demonstrates an effective way to develop citizen engagement and better accountability in the delivery of public services.

Wednesday, March 16, 2011

General Knowledge and Current Affairs

Top 10 Billionaires in the World by Forbes :-

1. Carlos slim - Mexico
2. Bill Gates - USA
3. Warren Buffet - USA ( chairman of Berkshire Hathaway )
4. Bernard Arnault - France ( CEO of LVMH )
5. Lawrence Ellison - USA ( CEO of Oracle )
6. Lakshmi Mittal - INDIA ( CEO of Arcelor Mittal )
7. Amancio Ortega - Spain ( Inditex Group Chairman )
8. Eike Batista - Brazil
9. Mukesh Ambani - INDIA ( Reliance Industries Chairman )
10.Christy Walton & Family - ( Richest Woman in the World )



List of non-Forbes billionaires :-

1. Hosni Mubarak – Politician – Egypt – from $1 billion upwards (with a $40–$70 billion family net-worth)
2. Muammar al-Gaddafi – Politician – Libya – several billion or more in private family holdings
3. Hasan Ali Khan – Businessman (money-launderer) – India – $9 billion
4. Musa Bin Shamsher – Businessman (arms-dealer) – Bangladesh – $7 billion
5. Massud Barzani – Politician – Iraq/Kurdistan – $2 billion
6. Asif Ali Zardari – Politician (President) – Pakistan – $1.8 billion
7. Adnan Khashoggi – Businessman (arms-dealer) – Saudi Arabia – $1 billion
8. Madhu Koda – Politician – India – $1 billion
9. Dawood Ibrahim – Crime-boss – India – $1 billion
10. Abu Salem – Crime-boss – India – $1 billion
11. Semion Mogilevich – Crime-boss – Russia – $1 billion



The Worlds Most Powerful Celebrities (2011) by Forbes :-

1. Oprah Winfrey
2. Beyonce Knowles
3. James Cameron
4. Lady Gaga
5. Tiger Woods
6. Britney Spears
7. U2
8. Sandra Bullock
9. Johnny Depp
10. Madonna

Brief Idea on Sensex and Stock Exchange

What are the Sensex & the Nifty?



The Sensex is an "index". What is an index? An index is basically an indicator. It gives you a general idea about whether most of the stocks have gone up or most of the stocks have gone down.

The Sensex is an indicator of all the major companies of the BSE.

The Nifty is an indicator of all the major companies of the NSE.

If the Sensex goes up, it means that the prices of the stocks of most of the major companies on the BSE have gone up. If the Sensex goes down, this tells you that the stock price of most of the major stocks on the BSE have gone down.

Just like the Sensex represents the top stocks of the BSE, the Nifty represents the top stocks of the NSE.

Just in case you are confused, the BSE, is the Bombay Stock Exchange and the NSE is the National Stock Exchange. The BSE is situated at Bombay and the NSE is situated at Delhi. These are the major stock exchanges in the country. There are other stock exchanges like the Calcutta Stock Exchange etc. but they are not as popular as the BSE and the NSE.Most of the stock trading in the country is done though the BSE & the NSE.

Besides Sensex and the Nifty there are many other indexes. There is an index that gives you an idea about whether the mid-cap stocks go up and down. This is called the “BSE Mid-cap Index”. There are many other types of indexes.

There is an index for the metal stocks. There is an index for the FMCG stocks. There is an index for the automobile stocks etc.

How to calculate BSE SENSEX?



This article explains how the value of the “BSE Sensex” or “sensitive index” is calculated. The Sensex has a very important function. The Sensex is supposed to be an indicator of the stocks in the BSE. It is supposed to show whether the stocks are generally going up, or generally going down.

To show this accurately, the Sensex is calculated taking into consideration stock prices of 30 different BSE listed companies. It is calculated using the “free-float market capitalization” method. This is a world wide accepted method as one of the best methods for calculating a stock market index.

Please note: The method used for calculating the Sensex and the 30 companies that are taken into consideration are changed from time to time. This is done to make the Sensex an accurate index and so that it represents the BSE stocks properly.

To really understand how the Sensex is calculated, you simply need to understand what the term “free-float market capitalization” means. (As we said earlier, the Sensex is calculated on basis of the “free-float market capitalization” method) But, before we understand what “free-float market capitalization” means, you first need to understand what “market capitalization” means.

What is "market capitalization"?


You probably think that you have never heard of the term “market capitalization” before. You have! When you are talking about “mid-cap”, “small-cap” and “large-cap” stocks, you are talking about market capitalization!

Market cap or market capitalization is simply the worth of a company in terms of it’s shares! To put it in a simple way, if you were to buy all the shares of a particular company, what is the amount you would have to pay? That amount is called the “market capitalization”!

To calculate the market cap of a particular company, simply multiply the “current share price” by the “number of shares issued by the company”! Just to give you an idea, ONGC, has a market cap of “Rs.170,705.21 Cr” (when this article was written)

Depending on the value of the market cap, the company will either be a “mid-cap” or “large-cap” or “small-cap” company! Now the question is, how do YOU calculate the market cap of a particular company? You don’t! Just go to a website like MoneyControl.com and look up the company whose market cap you are interested in finding out! The figure in front of “Mkt. Cap” will be the market cap value.

Having seen what market cap is and how to find out the market cap of a particular company, let us try to understand the concept of “free-float market cap”

What is "free-float market capitalization"?


Many different types of investors hold the shares of a company! The Govt. may hold some of the shares. Some of the shares may be held by the “founders” or “directors” of the company. Some of the shares may be held by the FDI’s etc. etc!

Now, only the “open market” shares that are free for trading by anyone, are called the “free-float” shares. When we are calculating the Sensex, we are interested in these “free-float” shares!

A particular company, may have certain shares in the open market and certain shares that are not available for trading in the open market.

According the BSE, any shares that DO NOT fall under the following criteria, can be considered to be open market shares:

  • Holdings by founders/directors/ acquirers which has control element
  • Holdings by persons/ bodies with "controlling interest"
  • Government holding as promoter/acquirer
  • Holdings through the FDI Route
  • Strategic stakes by private corporate bodies/ individuals
  • Equity held by associate/group companies (cross-holdings)
  • Equity held by employee welfare trusts
  • Locked-in shares and shares which would not be sold in the open market in normal course.

A company has to submit a complete report about “who has how many of the company’s shares” to the BSE. On the basis of this, the BSE will decide the “free-float factor” of the company. The “free-float factor” is a very valuable number! If you multiply the "free-float factor" with the “market cap” of that company, you will get the “free-float market cap” which is the value of the shares of the company in the open market!

A simple way to understand the “free-float market cap” would be, the total cost of buying all the shares in the open market!

So, having understood what the “free float market cap” is, now what? How do you find out the value of the Sensex at a particular point? Well, it’s pretty simple….

First: Find out the “free-float market cap” of all the 30 companies that make up the Sensex!

Second: Add all the “free-float market cap’s” of all the 30 companies!

Third: Make all this relative to the Sensex base. The value you get is the Sensex value!

The “third” step probably confused you. To understand it, you will need to understand “ratios and proportions” from 5th standard mathematics. Think of it this way:

Suppose, for a “free-float market cap” of Rs.100,000 Cr... the Sensex value is 4000…

Then, for a “free-float market cap” of Rs.150,000 Cr... the Sensex value will be..

Sensex calculation!

So, the Sensex value will be 6000 if the “free-float market cap” comes to Rs.150,000 Cr!

Please Note: Every time one of the 30 companies has a “stock split” or a "bonus" etc. appropriate changes are made in the “market cap” calculations.

Now, there is only one question left to be answered, which 30 companies, why those 30 companies, why no other companies?

The 30 companies that make up the Sensex are selected and reviewed from time to time by an “index committee”. This “index committee” is made up of academicians, mutual fund managers, finance journalists, independent governing board members and other participants in the financial markets.

The main criteria for selecting the 30 stocks is as follows:

Market capitalization: The company should have a market capitalization in the Top 100 market capitalization’s of the BSE. Also the market capitalization of each company should be more than 0.5% of the total market capitalization of the Index.

Trading frequency: The company to be included should have been traded on each and every trading day for the last one year. Exceptions can be made for extreme reasons like share suspension etc.

Number of trades: The scrip should be among the top 150 companies listed by average number of trades per day for the last one year.

Industry representation: The companies should be leaders in their industry group.

Listed history: The companies should have a listing history of at least one year on BSE.

Track record: In the opinion of the index committee, the company should have an acceptable track record.

Having understood all this, you now know how the Sensex is calculated.

Tuesday, March 15, 2011

Vocabulary Builder

Quantitative Aptitude Rules and Formulas to solve Problems

1. Finding Minimum Value

For any set of n positive numbers ,
Arithmetic Mean >= Geometric Mean >=Harmonic mean

The equality occurs only when all the numbers are equal .

This can be used if the sum(or product ) of some numbers are given and the maximum(or minimum) value of the product(or sum ) is asked ...

Ex : xy=27
minimum value of 3x+4y ?

taking 3x and 4y to be two numbers and applying our rule
A.M : (3x+4y)/2
G.M : (12xy)^1/2=(4*3*27)^1/2 = 18
A.M >= GM
3x+4y >= 2*18
Hence the minimum value of (3x+4y) is 36
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2. Permutations and Combinations Concept :-

how to put 9 identical rings in 4 fingers.
concept= n+r-1Cr-1
this formula is used to distribute n identical things among r people.
if the 9 rings are named, a1,a2,a3....a7,a8,a9
we want to distribute them among 4 fingers, means we want to make four groups out of this 9 rings.
so if we arrange the 9 rings side by side.
_a1_a2_a3 _a4_ a5_ a6_ a7_a8_a9_
we need three separator to divide them in 4 groups. and we can put the separator at any of the black space above.
suppose I put first separator after a1, second after a4, 3rd after a6
so groups are
a1
a2,a3,a4
a5,a6
a7,a8,a9
that means I can say I have total 12 items ( 9+3) to arrange them selves.
that is 12!
but 9 rings are identical and 3 separators are also identical
so final answer shd be = 12!/9!*3
if we replace 9 with n,3 with r
we get
n+r-1Cr-1

2. how to distribute 9 different rings among 4 fingers.
just a single change rings are different, so we dont have to divide by 9!,
so answer = 12!/3!
general formula = n+r-1Pr-1
both of the above Q are of arrangement and distribution.
examples where this concept can be used.
1. distribute 1o chocolates aming 6 children such that no children is empty handed.
2. find whole number solutions for X+Y+Z = 22
3. find natural number solutions for X+Y+Z= 22
4. total number of terms in (a+b+c+d)^15
concept 3. total number of squares which can be made from size in N*N size square.
= 1^2 + 2^2 + 3^3 .....N^2
like for 2*2 square we can have total 5 squares, 4 square of 1*1, and the 2*2 square itself.
concept 4. total number of rectangles which can be made from N*N square.
= 1^3+2^3+3^3.....n^3
concept 5. A plane( restricted) is to be divided in N distinct parts, find the minimum number of lines to do so.
formula = > sigma X = N-1
X is the minimum number of lines.
suppose we want to divide plane in 16 distinct parts
sigma5 = 15
so answer is 5 lines
.
______________________

3. NO. OF SQUARES AND RECTANGLES IN A CHESSBOARD

i
n a chessboard,there are 8*8 squares.

in a 2*2 chessboard, there are 5 squares (4 small aquares, 1 big square).
similarly in an n*n chessboard, there are 1^2 +2^2+....+n^2 squares.

so in a 8*8 chessboard, n=8
=> no.of squares = 1^2 +2^2+3^2+.....+8^2
= [n (n+1) (2n+1)]/6 (summation formula)
= 204

rectangles :

in a 2*2 chessboard, there are 9 rectangles (4 1*1s,1 2*2,2 2*1s, 2 1*2s)

for an n*n chessboard, there are 1^3 +2^3+3^3+.....+n^3 rectangles.

so for an 8*8 chessboard, there are, rectangles = 1^3+2^3+....+8^3

=> no. of rectangles = [{n^2}{(n+1)^2}/4

n=8, we get no. of rectangles = 1296

**No. of rectangles that are not squares in an 8*8 chessboard
=> 1296- 204
= 1092
______________________

4.HOW to find the last non zero digit in x!

Last non-zero digit of 10! = 8
For 20! = 8*8 = 4 [6 is dropped]
This can continue for any number of 10s.

For example,

Last digit of 70! will be given by 8^7

For last digit of 8^7 = 2^21
=( 2^10)^2 * 2
= 76*2
=2

Therefore, last digit of 70! is 2.

If you are asked for 73!, then just multiply the above 2 with 71*72*73
or simply 2 with 1*2*3

Therefore, last non zero digit for 73! become 2*6 = 2 [ignoring 10s digit]

______________________

5. Pythagorus Triplets :-

How we can find different pythagorus triplets.

The Formula is n+[n/(2n+1)]

hence N can take values from 1,2.....

hence the first mixed fraction becomes 1[1/3] = 4/3
One side of the pythagorus theorem is denominator which is 3 and other side is numerator which is 4, the hypotenuse is 4+1 = 5

Hence the triplet is 3,4,5.

Lets take n = 3
2n+1 = 7
Mixed fraction becomes = 24/7
the first side becomes 7, the other side is 24 and hypotenuse is 24+1 = 25
hence 7,24,25.

all the other remaining pythagorus triplet is multiples of the triplets given by the above formula.

______________________________________________________________

6. Basic Formulae :-

(a) In a plane if there are n points of which no three are collinear, then
  • The number of straight lines that can be formed by joining them isnC2.
  • The number of triangles that can be formed by joining them is nC3.
  • The number of polygons with k sides that can be formed by joining them isnCk.

(b) In a plane if there are n points out of which m points are collinear, then
  • The number of straight lines that can be formed by joining them isnC2 – mC2 + 1.
  • The number of triangles that can be formed by joining them is nC3 – mC3.
  • The number of polygons with k sides that can be formed by joining them isnCk – mCk.

(c) The number of diagonals of a n sided polygon are nC2 – n = n × (n – 3)/2.


(d) The number of triangles that can be formed by joining the vertices of a n-sided polygon which has,
  • Exactly one side common with that of the polygon are n × (n – 4).
  • Exactly two sides common with that of the polygon are n.
  • No side common with that of the polygon are n × (n – 4) × (n – 5)/6.
_____________________________________________________________________________________

7. Cauchy-Schwartz Equation:

If a , b , c , d are four real numbers, they always satisfy the relationship

(a^2+b^2)(c^2+d^2)>=(ac+bd)^2

This can be generalized to a large number of variables as
(a1^2+a2^2+a3^2+.....)(b1^2+b2^2+b3^2+....)>=(a1b1 +a2b2+a3b3+....)^2

Questions:
1>Find the least value of X^2+Y^2+z^2 if X+2y+3Z=14

Sol:-->(X^2+Y^2+z^2)(1^2+2^2+3^2)>=(X*1+Y*2+z*3)^2
hence , min value= 14^2/14=14

_____________________________________________________________________________________

8. Basic Formula

The number of regions into which n straight lines divide the plane = n(n+1)/2 +1.

The number of unbounded regions = 2n.

if a circle is drawn and n straight lines are drawn, then all the regions are bounded which is n(n+1)/2 + 1

GDPI related topics

EVERYTHING ON CAT 2011 PREPARATION – LET THERE BE LIGHT !!

If you are reading this then it’s but obvious that you are preparing for CAT or planning to prepare for the same. The most obvious questions that student ask are the aim of this article. Let us help you in answering you these questions.

KICK-STARTING YOUR CAT PREPARATION

1) Ok Folks, how to start?

  • Give a diagnostic test for CAT. You can give such tests at various places on the Internet but like TestFunda iCAT (It’s totally free). Such tests are also available in preparation books such as Arun Sharma and others.

a) Why should I give a test right now even though I am not prepared?

It will help you assess the parameters that you are required to fulfill. It will tell you the general areas where you are weak at and where you stand. It will help you get a feel of the exam and by the time you are finished with your preparation, you will know the importance of diagnostic test.

Almost all coaching institute give it to their students during their classroom programme to assess the capabilities of the student. However, it is, important that you do not take the results too seriously and get demoralized in the process.

2) Buying Study Material

Now there is a lot of research going on, asking your peers and everything for buying the correct study material. We have made a list of some great books that are very popular amongst students due to their high relevance and quality.

Which books to buy?

  1. At least one coaching institute package like Career Launcher, TIME, TestFunda or others.
  2. Arun Sharma Quant + Verbal + DI books.
  3. Total Gadha Book on Number System.
  4. Normal Lewis Vocab book (Highly Recommended).

If you were giving CAT again, then how would you buy books?

Hmm…good question if you are asking it in your mind. I personally would keep the 2,3,4th option the same but the first option, I would have changed things a bit because I have referred to the material of many coaching institutes. Every institute material has it’s strengths and though we don’t want to talk about the weakness, we would like to recommend a few must have niche books for CAT 2011.

1) CL Reading Comprehension 2

2) CL Sentence Correction – The book on Grammar

3) TIME – Logical Reasoning Problems Types

4) TIME – LRDI both combined

5) Test Funda books in General.

If you can get on these books in specific, it would be great and complement the package of whichever coaching institute you buy.

STUDY PLAN FOR CAT 2011

Ok, I got the books, now what should be my study plan?

The date of the CAT exam is not out but we will still use relative terms to plan this in general.

  1. Plan your study schedule such that you finish the entire syllabus or the most part of it at least two months before the date of the exam.
  2. Try and study all the three subjects every day rather than picking up one subject a day or per week. Divide time between the subjects and then continue your studies on all three fronts.
  3. Read Novels and articles online for building stamina on the screen.
  4. Take a break in between and try to stick to your schedule. Remember, CAT is more about diligence than intelligence. There are many average students (academically speaking) who have made it to the IIMs.
  5. Join the Pagalguy Quant thread if you still have time on your hands.

I finished my preparation much before, what should I do?

Do the books again.

What again..? Yes, it is not a typo, do it again and again and keep on doing it till the time you can recall each question of Arun Sharma (LOD 1 and 2 specifically) by heart. You may not believe but this single sentence differentiates the Quant Gods and the mortals.

Not only people good in Quant are actually good in quant but the fact is that they have done similar questions over and over again, non stop. This makes them the Gods of Quant as they are known on Pagalguy. Try this approach, also recommended by Arun Sharma, an IIM-B Alumni. If you are looking for some tougher questions, get hold of TIME AIMCATs of the previous years.

You are saying that finish the syllabus two months before – Why so??

It’s because of the next aspect – ”Mock Exams. ”

What are mock exams?

These are exams exactly on the pattern of the CAT paper which students around the country give to assess their capabilities and preparation level.

Which all institutes provide these tests?

All most all the major institutes! We recommend that you join two test series of which one should be of TIME.Why TIME ?- because we get money…..LOL .. we don’t get paid for anything we write here but the reason is that maximum number of students join this series and the quality is at par with other institutes, if not better. Since a large number of students are giving their test series with a more even span throughout the country, you get a better picture of your performance.

Why 2 Mock Series then?

Though TIME has a great test series, there is one thing that other institutes are doing better right now in our opinion. What is that you ask? It is “The post exam analysis.”

You can see this for yourself once you give the free iCAT of Test Funda. The post exam analysis with in depth info via charts and interactive mediums is just fantastic which is not the case with TIME. They have analysis tools but IMHO, they are nowhere close to that of TestFunda or for that matter CL.

Why are these post exam analysis important?

Ok…this is where the 2 month early finishing comes in handy. Understand this thus

2 month before – Finished with my syllabus. This is how it follow from here:

1) Monday – You give the exam

2) Tuesday – You get the result and start analysis. Ideally, if the mock takes 2 and a half hour, you should spend 5 hours while analyzing. You start analyzing the questions you did, did not do and which you did but got wrong and see the reasons to it.

3) Wednesday – You start revising the weak areas that the analysis has projected. You may have done all topics but somehow you are not able to solve questions of Geometry and Grammar properly (as per the analysis) so you prepare Geometry again.

4) Thursday – You give smaller tests like skill builder and Total Gadha free test options while revising Geometry and Grammar in specific and other areas that you feel like in general.

5) Friday – You continue to do Geometry and grammar chapter from Arun Sharma and CL book respectively.

6) Saturday – Give more smaller 20 minutes tests of Geometry and grammar and a few others.

7) Sunday - Break !! Now you have revised your weak areas in particular and ready to start the next week with your flaws covered.

Rinse, repeat and follow !! Then again the same routine. This will allow you to prepare for the test in the best possible manner and you can amend the flaws in your preparation. Of course, you can vary the schedule as per your convinience.

The Big Day – Last Lap

You revise the core concepts once again, get a hang in of the questions, get good sleep, have a good mood. We will be running an entire article on the last lap and you can connect with us using Facebook, Twitter, RSS or Email (just enter your email in the box on the right hand side) to stay updated with loads of useful information like exam form updates, cat exam updates and others.