Skip to main content

WHY THE SCHOOL TOPPER DOES NOT BECOME COLLEGE TOPPER?

    

ADVT: SELL ON AMAZON

     Think of Usain bolt. He created a world record in 100m dash. Could he repeat the record performance the next day after winning gold? Probably, he could not. Because many factors come into play on that particular day like his mood, the condition of the track, the passion of the crowd, etc. Things will not fall into paces again.

     After an extreme performance, all of us may fall back to our average or around the average. That is why, a student who excelled in school final year, may not make it at the college level.

    We have our own average values of BP, sugar, temperature, speed of writing, speed of running, response time, etc. When running, the BP value may increase, after a while, it will fall back to 'our average'. This is called"regression to mean" mathematically.

     The above is the probability curve drawn between performance and its quality. Mostly, our performance cluster around means. Sometimes, we perform very poorly or excellently.   

    But, in the Olympics, interview, dating, conference, we have to push our limits and excel. One can always attempt to do that. But golden moments occur rarely.

     In some experiment results, survey findings should not be accepted immediately. We should find whether they will regress to mean a little while later.

Comments

Popular posts from this blog

THE EARTH, A SUPER ORGANISM

     JOIN MY COURSE: "Become a programmer in a day with python"       A man called 'love lock' (what a name) proposed a theory called Gaia theory, named after Greek Goddess.      It says, "Earth is a self-regulating organism like a human being.  The organic life in it interacts with in-organic matter and maintains atmosphere, temperature and environment".  Hence the earth is still suitable for the life to thrive.      Imagine, in a particular place, there are lot of flowers.  Some flowers are white and some are darkly coloured.  We know, white reflects light and heat while dark absorbs the same.  White flowers can thrive in hot climate.  But dark flowers requires cold climate.  The absorption and reflection balances and the environment reaches average, warm temperature at which both the flowers can co-exist.  This is the essence of "Gaia" theory.      On our earth, ...

DISORDER IS THE "ORDER OF THE DAY"

         Imagine a balloon full of air.  The air molecules are moving randomly inside the balloon.  Let us pierce the balloon with a pin.  The air rushes out.  Why should not the air molecules stay inside the balloon safely and ignore the little hole?  That is not the way the world works.  The molecules always "want to occupy as many states as possible".  Hence the air goes out in the open to occupy more volume.   The things always goes into disorder (entropy) and the disorder increases with time.  The above statement is what we call "second law of thermodynamics".      Consider a cup of coffee on the table. Suppose the heat from entire room flows to your cup of coffee, the coffee will boil and the rest of the room will freeze.  Freezing means bringing things to order and arrangement.  It violates the second law.  Hence it will never happen.  Hence heat must flow from high ...

CASINO'S GAME

           Let us find out how the casino survives with mathematics.      Say, your friend invite you for a game of dice.  You must bet (wager) 2 dollars.  If you roll 'six' you will get back 8 dollars.  The game will go on for 30 rounds.  All sounds good.      The probability of rolling 'six' is 1/6.  Since the game will be played for 30 times, the 'expected win' is 30*1/6 = 5.  That is, you are expected to win 5 rounds out of 30.  Hence your gain will be 5 * 8 =40 dollars.  ok.  This also implies that you will loose 25 rounds.  Hence your loss will be 25*2 =50 dollars.  Your net gain will be gain-less = 40-50 = -10 dollars. For 30 rounds, the loss is -10 dollars, Hence, for one round =-10/30 = -1/3 dollars.  There will be a loss of -1/3 or 0.33 dollars per round.  It is not a fair game.     Let us make a simple formula to calculate  'Pa...