Question

The mean of 8 numbers is 56.25. What would the new mean be if the numbers 108 and 100 are added to the data set?

65.8
82.25
73.1
69.75

Answer 1

@rosebud4612flvs

Answer 2

It's A

Answer 3

Give me a second to work it out.

Answer 4

to find the mean you need to dived the sum of a total of numbers by the numbers added

Answer 5

ok

Answer 6

@kevindragonlord for this problem, wouldn't you have to find the 8 numbers first?

Answer 7

before you can add the 100 and 108?

Answer 8

that means to find the sum of the 8 numbers we need to multiply 8 * 56. 25

Answer 9

no it would be near impossible

Answer 10

so not A

Answer 11

^Oh I see what you did. The answer would be 65.8

Answer 12

yes rose

Answer 13

thanks you both!

Answer 14

@n33dhelp1 it would be A. After multiplying 8*56.25 you get 450. You add the 108 and 100 to 450 to get 658. Divide that by 10 and you get 65.8

Answer 15

yeah it was A ty so much

Answer 16

You're welcome :)