Consider following frequency distribution which is based on the set of sample data:
X

0

1

2

4

4

5




f

8

18

12

11

5

1




a) Find out the sample size?
b) Find out the relative frequency of X=4?
c) Is the above " a grouped data" type?
d) Generate the cumulative frequencies.
e) Find out the mode and P_{50.}