juicyyflavored
New member
- Joined
- Oct 6, 2008
- Messages
- 2
The five- number summary of the distribution of scores on a statistics exam is
0 26 31 36 50
316 students took the exam. The histogram (not shown) of all 316 test scores was approx. normal. Thus the variance of test scores must be about ...
(a) 5
(b) 8
(c) 19
(d) 54
(e) 55
I know the answer but i dont know how to get it.
0 26 31 36 50
316 students took the exam. The histogram (not shown) of all 316 test scores was approx. normal. Thus the variance of test scores must be about ...
(a) 5
(b) 8
(c) 19
(d) 54
(e) 55
I know the answer but i dont know how to get it.