Given below is the information about marks obtained in Mathematics and statitics by 100 students in a class. Which subject shows the highest variability in marks?

Solve the following: The mean and standard deviation of marks obtained by 50 students of a class in three subjects, maths, physics and chemistry are given below: Which subject shows the highest variability in marks and which shows the lowest?

Answer the following : The means ans S.D. of weights and heights of 100 students of a school are as follows. Which shows more variability, weights or heights?