Frequency
Heights (in cm)
12
150 - 155
9
155-160
14
160-165
10
165-170
5
170-175
Total
50
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120 is the anweryyyyyygggg
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Height ( in cm) Frequency Cumulative frequency given Cumulative frequency
150-155 12 a 12
155-160 b 25 12+b
160-165 10 c 22+b
165-170 d 43 22+b+d
170-175 e 48 22+b+d+e
175-180 2 f 24+b+d+e
Total 50
On comparing last two tables, we get
a=12
∴12+b=25
⇒b=25−12=13
22+b=c
⇒c=22+13=35
22+b+d=43
⇒22+13+d=43
⇒d=43−35=8
22+b+d+e=48
⇒22+13+8+e=48
⇒e=48−43=5
24+b+d+e=f
⇒f=24+13+8+54=50
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