Aside: I'm assuming here that "average" is the same as "mean average"sud21 wrote:The average of some numbers is 43, what is the standard deviation?
1). The least number is 43
2). The greatest number is 43
Statement 1:
If the smallest value is 43, AND the average is 43, then there can be no values greater than 43.
So, the set consists solely of 43's, in which case the SD = 0
SUFFICIENT
Statement 2:
If the biggest value is 43, AND the average is 43, then there can be no values less than 43.
So, the set consists solely of 43's, in which case the SD = 0
SUFFICIENT
Answer = D
Cheers,
Brent
