Question

A biologist measures the lengths of 40 fish and records the results in a grouped frequency table.

Find x if the mean length is 15.75cm

Answer 1

I think the answer is 630.
Mean=sum of observations/no. of observations
15.75=X/40
15.75×40=X
X=630

Answer 2

Hello dear your answer is in down
X
Length =15.75cm
length of fish

Mean= Length÷length of fish or number of observation
15.75÷40=X
X= ,315
By my calculation answer is 315

Hope it helps you