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1 answer:
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Solution:
As, Mean =
Standard deviation is a number which describes or depicts relationship between mean and the number(Called Standard deviation).
So , if the difference between mean and standard deviation is large then it means data is widely spread i.e farther from mean and if Difference between mean and standard deviation is small it means data are close to mean.
So,in the given question , it is study about a group not individual players, so instead of studying mean , that gives average , if he will calculate standard deviation that is the number of points earned by each group,which will describe performance of each player as well as average of the group, that will give better description about the two groups.
Option (C) The standard deviation of the number of points earned by each group, is true statement about the study of two groups given in this question.