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

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, ...

THE PARABOLA

A jet of water shooting from a hose pipe will follow a parabolic path. What is the so special about parabola. Y= x^2 Draw a graph for the above equation. It will result in a parabola. This parabola is also called unit parabola. Any equation involving square will yield a parabola. Example: Y = 2x^2 +3x+3 (also called quadratic equation) X= 2 and -2, both satisfies the equation 4 = X^2. Parabolic equations always have two solutions. Any motion taking place freely under gravity follows parabolic path. Examples: An object dropped from a moving train, A bomb dropped from flying plane, A ball kicked upwards. If a beam of light rays fall on the parabolic shaped mirror, they will be reflected and brought to focus on a point. This fact is made use of in Dish Antenna, Telescope mirrors, etc. ...

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 ...

sciencecapsules

Search This Blog