A P Prabhakaran Solutions for Chapter: Statistics, Exercise 3: OBJECTIVE TYPE QUESTIONS

Which of the following is a measure of dispersion?

Variance of observations $x_1, x_2, x_3, \dots , x_n$ is given by

The sum of squares of $8$ observations is $144$ and their mean is $3$, then S.D. is

For the following raw data: $3, 9, 5, 3, 12, 10, 18, 4, 7, 19, 21$ the mean deviation about median is

In a cricket season, the player A scores on average of $50$ runs with a standard deviation of $15$ runs, the coefficient of variation of the player is given by

The variance of the data $2, 4, 6, 8, 10$ is

The mean deviation about mean of natural numbers less than $8$ is

The standard deviation of the first $10$ natural numbers is