Question

The mean height of shweta, smriti
and suniti is 148cm. If shweta and
smriti are 150 cm and 140cm tall
find suniti's heigh
​

Answer 1

Answer:

following data was obtained:

Height in cm Number of Girls

Less than 140 4

Less than 145 11

Less than 150 29

Less than 155 40

Less than 155 46

Less than 165 51

Find the median height.

MEDIUM

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ANSWER

Height (in cm) f C.F.

below 140 4 4

140-145 7 11

145-150 18 29

150-155 11 40

155-160 6 46

160-165 5 51

N=51⇒

2

N

=

2

51

=25.5

As 29 is just greater than 25.5, therefore median class is 145-150.

Median=l+

f

2

N

+C

×h