Two cricket players, X and Y, scored runs in 10 innings each during a tournament. The data are summarised as follows:
Player X: ∑x=380,∑x2=18400
Player Y: ∑y=400,∑y2=21000
Answer the following.
(i) For each player, compute the mean runs per innings.
(ii) For each player, compute the variance and the standard deviation of runs (correct to two decimal places).
(iii) On the basis of your results, determine which player is more reliable in scoring runs and give a brief reason.