Question

find the mean 30 39 37 33 40 31 36 35 40​

Answer 1

30+39+37+40+31+36+35+40/8

296/8

37

This is your answer

Hope it helps u

Answer 2

Mean= sum of observation/no of observations
Mean=30+39+37+33+40+31+36+35+40/9
=321/9=107/3=35.9