Question

Match each data set with the effect of eliminating the outlier(s).

12, 36, 31, 37, 38, 37, 31 A) only mean decreases
62, 55, 58, 73, 219, 51, 73 B) none
54, 52, 52, 56, 64, 55, 53, 54 C) mean and median decrease
31, 29, 10, 32, 30, 52, 33, 31 D) mean and median increases

Answer 1

what would the outlier be for the first one?

Answer 2

I believe the questions are to be matched up with the right ones, I have no idea.

Answer 3

yes they have to be matched up we are going to do that in a bit first though what is the odd number out for the first set of numbers

Answer 4

12

Answer 5

so 31,31,36,37,37,38

Answer 6

can you find the median in that set for me please

Answer 7

35

Answer 8

the median is found by the formula n/2 where n is the number of terms, in this case: 6/2 which is 3, so the median would be the 3rd term

Answer 9

What?

Answer 10

wait what
0.o

Answer 11

@Purplerainbowcherry that is incorrect

Answer 12

I've found the median for the set, klowniove.

Answer 13

really? all of the questions i've ever done were like that

Answer 14

no to find median of a set like this you add the 2 numbers up that are left and divide by 2

Answer 15

Ohhh wait i forgot the 1!! It's n+1/2

Answer 16

you could solve it like that or your way

Answer 17

36+37=73/2=36.5

Answer 18

the median here would be 36.5 now add the 12 in the set what would be the median?
12,31,31,36,37,37,38

Answer 19

so, 12 x 31 x 31 x 36 x 37 x 37 x 28 / 7?

Answer 20

no you wouldn't multiply you would add

Answer 21

Oh, Isee.

Answer 22

what would the median be for the set of numbers i just posted

Answer 23

I got 30.28 and osme more numbers

Answer 24

lets find the median right now for the set with 12 if it increases we without we can figure out that one right away

Answer 25

okay so, shall I try it again or was i correct?

Answer 26

that was finding the mean we are looking for the median of 12,31,31,36,37,37,38

Answer 27

31

Answer 28

try again

Answer 29

12 + 31 + 31 + 36 + 37 + 37 + 38 divided by 7 right?

Answer 30

thats finding the mean

Answer 31

OH! It's 36, the middle number

Answer 32

yes :) so with 12 is 36 without 12 is 36.5 did it increase or decrease?

Answer 33

Decrease

Answer 34

Right? :D

Answer 35

36>36.5?

Answer 36

With 12 it is 36 right? And 36.5 is higher then 36. So the mean decreases

Answer 37

median* does the median increase or decrease without 12

Answer 38

It decreases.

Answer 39

so 36 is bigger than 36.5?

Answer 40

You said that it's 36 WITH 12, and 36.5 WITHOUT 12. So WITH 12 it decreases.

Answer 41

alright so it increases without 12 which option does the median increase

Answer 42

So now we have to see if the median increases or decreases?

Answer 43

the median is increasing only 1 option has median increasing

Answer 44

There is only one option for the mean decreasing, theres another option with the mean and median increasing.

Answer 45

only one says that the median increases

Answer 46

no? 12, 36, 31, 37, 38, 37, 31 A) only mean decreases
62, 55, 58, 73, 219, 51, 73 B) none
54, 52, 52, 56, 64, 55, 53, 54 C) mean and median decrease
31, 29, 10, 32, 30, 52, 33, 31 D) mean and median increases