Question

When the outliers are removed, how does the mean change?

Answer 1

Do you have answer choices?

Answer 2

A) The mean decreases by 2.75.
B) The mean increases by 2.75.
C) The mean increases by 3.25.
D) There are no outliers.

Answer 3

To find the Mean:\[(18 + 38 + 38+40+44+44+44+46+48)/9=40\]

Answer 4

okay

Answer 5

Can you tell me what the Outlier is @desiraem

Answer 6

is it 48?

Answer 7

i'm not sure of what an outlier is sorry.

Answer 8

Its ok, an Outlier is a number that is "outside" of the other numbers.
Example: Of the numbers 1, 2, 3, 4, 5 and 10, 10 is the Outlier because it is "far away" from the rest.

Answer 9

So, now what is the Outlier of all the points?

Answer 10

@desiraem

Answer 11

50?

Answer 12

Not quite, the black points are the numbers were talking about. The Outlier is 18 because it is "far away" from 38, 44, and 48.

Answer 13

Ohhhh! i understand now.

Answer 14

Yay ^-^ so now we find the mean again, but this time we don't include 18

Answer 15

sorry, i always have blonde moments.

Answer 16

ok!

Answer 17

Its ok :)

Answer 18

i added them and got 342? do i divide it by 8?

Answer 19

Yes, you divide them by 8 =)

Answer 20

i got 300?

Answer 21

wait, nvm.

Answer 22

42.75

Answer 23

Yes, now from 40 to 42.75, Did we increase or did we decrease? How much did we Increase/Decrease?

Answer 24

we increased?

Answer 25

decreases*** ugh sorry.

Answer 26

OK:)

Answer 27

oh it was increases? lol

Answer 28

Increase was Correct

Answer 29

yay thank you!

Answer 30

So the answer is B becuz we Increased by 2.75 (42.75-40 = 2.75)

Answer 31

thank you!

Answer 32

Your Welcome