Question: to help in describing the variation in height between two...
Question details
To help in describing the variation in height between two populations that have the same mean height, which of the following are true:
A. 
Calculating the variance would be helpful 

B. 
Calculating the SD would be helpful 

C. 
Calculating the Chisquare value would be helpful 

D. 
30% of the population fall within 2 SD of the mean 

E. 
two of the above 