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?

Answer the following : Write a short note on : Weight

Answer the following : Calculate S.D. from following data

Answer the following : Compute the variance and S.D. for the following data

Answer the following : Following data relates to the distribution of weights of 100 boys and 80 girls in a school Which of the two is more variable?

Answer the following questions : Define weight . State its SI and CGS units.

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?

Answer the following : The mean and S.D. of a group of 50 observation are 40 and 5 respectively. If two more observations 60 and 72 are added to the set, find the mean and S.D. of 52 items.