Both of the following lists have the same average of 50.
a) Which one has the smaller SD, and why? No computations are necessary.
(i) 50,40,60,30,70,25,75
(ii) 50,40,60,30,70,25,75,50,50,50
b) Repeat, for the following two lists.
(i) 50,40,60,30,70,25,75
(ii) 50,40,60,30,70,25,75,99,1