Question

Please can you answer It is due very soooooonn Will mark brainiest

Answer 1

Answer:

Mean of a grouped data is

Sum of F x/ sum of frequency F

Sum of F = 5 + 15 + 13 + 10 + 7 = 50

to find x find the average of the two classes

That's

0 + 10/2 = 10/2 = 5

10+20/2 = 15

20 + 30 / 2 = 25

30+40 /2 = 35

40+ 50 / 2 = 45

Therefore sum of Fx = 5(5) + 15(15) + 13(25) + 10(35) + 7(45)

= 1240

Therefore

Mean = 1240/50

= 24.8cm

I hope this helps you