For numbers 16-20. Refer to the table below.

scores
31-35
26-30
21-25
16-20

f
4
6
8
2

LB
30.5
25.5
20.5
15.5

<cf
20
16
10
2

16. What is the value of class width or i?
a. 4
C. 6
b. 5
d. 7
17. What value of lower boundary is to be used in solving D7.5?
a. 15.5
C. 25.5
b. 20.5
d. 30.5
18. What is the value of 7.5th decile?
a. 26.52
c. 28.34
b. 27.83
d. 29.67
19. What value of cfo is to be used in solving the value of 70th percentile?
a. 2
b. 10
c.16
d. 20
20. What is the value of the middle quartile?
a. 15.5
c. 25.5
b. 20.5
d. 30.5​



Sana po may makatulong po need na need ko na po kase Ang sagot