Give a two set of four numbers for following with justification?

(a) The sets are different, the sample means are the same, the sample variances are the same.





(b) The sets are different, the sample means are different, the sample variances are the same.





(c) The sets are different, the sample means are the same, the sample variances are different.Give a two set of four numbers for following with justification?
a) {2,3,5,8}{1,4,6,7} mean=4.5, variance=7


b) {2,3,5,8}{3,4,6,9} means of 4.5 and 5.5, var=7 adding a constant doesn't change the variance.


c) {3,4,5,6}{1,2,7,8) mean=4.5, var of 1.67 and 12.33 spreading the data out from the mean increases the variance.