8. What another notation can be used for a variance?
A. E(X)
B. P(X)
C. P (X)
D. Var(X)
9. If the variance of a probability distribution is 2.6 grams, then what proper way to
do to get the standard deviation?
A. V2.6
B. (2.6)2
C. 1.61 + 2.6
D. 1.61 -2.6
For items 10-11, refer to the diagram below.
4
3
2
1
SESSE
0
1 2 3 4 5 6 7 8 9 10 11 12 13 14
10. What is the value of px?
A. 4
B. 5
C. 6
D. 7
11. How dispersed are the scores from the mean?
A. 5
B. 6
C. 7
D. 8​