Question

Find the values of a, b, c, d, e, f, g from the following frequency distribution of the heights of 50 students in a class:

Height (in cm)	Frequency	Cumulative Frequency
160-165	15	a
165-170	b	35
170-175	12	c
175-180	d	50
180-185	e	55
185-190	5	f
	g

Answer 1

We know that

a = 15

b = 35 – 15 = 20

c = 35 + 12 = 47

d = 50 – 47 = 3

e = 55 – 50 = 5

f = 55 + 5 = 60

g = 60

Frequency Distribution Table

Height (in cm)	Frequency	Cumulative Frequency
160-165	15	15
165-170	20	35
170-175	12	47
175-180	3	50
180-185	5	55
185-190	5	60
	60