The following table gives weights of the students of two classes. Calculate the coefficient of variations of the two distributions. Which series is more variable?

Compute coefficient of variation for team A and B. Which team is more consistent?

Following data gives age of 100 students in a college. Calculate variance and S.D.

Answer the following : The mean ans standard deviation of two brands of watches are given below Calculate coefficient of variation of the two brands and interpret the results.

Name two factors on which the coefficient of friction depends.

Name two factors on which the coefficients of friction depends.