|
Class
|
20 – 25
|
25 – 30
|
30 – 35
|
35 – 40
|
|
Frequency
|
2
|
6
|
14
|
29
|
|
C.F. less than upper limit
|
2
|
?
|
?
|
?
|
SOLUTION:
|
Class
|
Frequency
|
C.F. less than upper limit
|
|
20 – 25
|
2
|
2
|
|
25 – 30
|
6
|
2 + 6 = 8
|
|
30 – 35
|
14
|
8 + 14 = 22
|
|
35 – 40
|
29
|
22 + 29 = 51
|
