Question

A survey regarding the heights in (cm) of 51 girls of class X of a school was conducted and the

following data was obtained. Find the mean using the formulae.

Height (in cm) Number of Girls

Less than 140 4

Less than 145 11

Less than 150 29

Less than 155 40

Less than 160 46

Less than 165 51​

Answer 1

Answer:

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