Question

Which item is true about average distribution curves of a small sample of population?

a) It has normal distribution anyway.
b) It is symmetrical and becomes closer to normal by increasing the number of members.
c) It’s not symmetrical and will become symmetrical by increasing the number of members.
d) It is symmetrical and will become wider (shorter) by increasing the number of members.

Answer 1

With a small sample size your graph is going to be less representative of the normal distribution, as you get more and more participants in the survey, your data points will spread out normally, becoming something that is more symmetrical.

the answer is C.

Answer 2

Thanks!