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Data regarding the wights of students of...

Data regarding the wights of students of class X of a school is given below

Computer the mean of the students

A

54.24 kg

B

55.24 kg

C

56.24 kg

D

57.24 kg

Text Solution

Verified by Experts

The correct Answer is:
D
Let A=57 be the assumed mean . Then , we have

`therefore barx=A+(Sigma(f_ixxd_i))/(Sigmaf_i)=(57+(36)/(150))=57+0.24=57.24` Hence , mean wieght =57.24 kg
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