Q9 of 108 Page 32

Find the coefficient of variation for the following data :

Given, The data is given in table

To Find: Find the coefficient variation.

Explanation:

Now, N=100,

Mean

Variance = 37.34

Standard Deviation

SD = 6.11

Coefficients variation =

Cv=21.9

Hence, The coefficient variation is 21.9

The mean and standard deviation of marks obtained by 50 students of a class in three subjects, mathematics, physics and chemistry are given below:

Which of the three subjects shows the highest variability in marks and which shows the lowest?

From the data given below state which group is more variable G₁ or G₂?

From the prices of shares X and Y given below: Find out which is more stable in value:

Life of bulbs produced by two factories A and B are given below:

The bulbs of which factory are more consistent from the point of view of the length of life?