Question

Class. frequency
10-20. 5
10-30. 2
10-40. 6
10-50. 9
find the mean?

Answer 1

Answer: 22/4 = 5.5

Step-by-step explanation: ADD THE NUMBERS

5+2+6+9=22

DIVIDE THEM BY THEIR NO. OF GIVEN ONES =4

THIS IS YOUR ANSWER

Answer 2

Answer 11,770

Step-by-step explanation:

class / class mark / frequency / class

mark x

frequency

10-20 15 5 75

10-30 20 2 40

10-40 25 6 150

10-50 30 9 270

*22 *535

MEAN= 535 = 11,770

22