For the data in the table, the mean score is 15 and the median score is 14.
How are the mean and median affected when the outlier 42 is added to the data?
Table titled Points Scored with data in the first and only row being 12, 13, 14, 19, 16, 14, 11, and 21.
A.
The mean and median are not affected.
B.
The mean and median both increase by 3.
C.
The mean increases by 3, but the median stays the same.
D.
The median increases by 3, but the mean stays the same.
http://static.k12.com/calms_media/media/1417500_1418000/1417708/1/e2741c82049d3fcbc8867f3110e1da2a

- rainbow_rocks03

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- rainbow_rocks03

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- rainbow_rocks03

Click the second link cause the first one didn't work

- rainbow_rocks03

also NO DIRECT ANSWERS

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## More answers

- rainbow_rocks03

Can you help?

- rainbow_rocks03

@amistre64

- rainbow_rocks03

IDUT=I Don't Understand This

- anonymous

idk

- amistre64

the first thing to help us out is to order it, and how do we determine the value of a mean and median?

- rainbow_rocks03

we add all the numbers up?

- amistre64

also, consider that outliers affect the mean .... so 2 options are just not valid to start with

- amistre64

adding up, and dividing is how we find the mean
and just picking the number i the middle of an ordered set is how we can determine the median

- rainbow_rocks03

IDK what the middle # is.

- amistre64

what does the ordered set look like?

- amistre64

first off, is the mean going to be affected? lets narrow our options

- rainbow_rocks03

BRb

- rainbow_rocks03

ok im back

- rainbow_rocks03

NO DIRECT ANSWERS

- rainbow_rocks03

I always say that when I put a board DON'T YALL FOLLOW DIRECTIONS?

- amistre64

focus on the question, not on the spam :)

- anonymous

it didnt say ....

- rainbow_rocks03

ok

- amistre64

will 42 affect the mean?

- rainbow_rocks03

yes?

- amistre64

it should yes. so that narrows our options

- amistre64

so the question is really, how does it affect the median.
wht is our ordered set?

- rainbow_rocks03

IDK

- amistre64

in elementary school grades they teach you how to determine if one number is bigger or smaller than another. .... just order the numbers from smallest to biggest.

- rainbow_rocks03

11 , 12 , 13 , 14 , 14 , 16 , 19 , 21

- amistre64

good, now we can find the middle

- rainbow_rocks03

14?

- amistre64

yep, now adding on the 42, what does the middle become?
11 , 12 , 13 , 14 , 14 , 16 , 19 , 21, 42

- rainbow_rocks03

14 still

- amistre64

11 , 12 , 13 , 14 , 14 , 16 , 19 , 21, 42
>>>>>>>>>>< <<<<<<<<<<
yep, still 14
so the median doesnt change, but the mean does

- rainbow_rocks03

So my answer is D

- amistre64

lets read them
A.
The mean and median are not affected.
^^^^^ ^^^^^^^^^ false
B.
The mean and median both increase by 3.
^^^^^^^^^^^ false
C.
The mean increases by 3, but the median stays the same.
^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^ true enough
D.
The median increases by 3, but the mean stays the same.
^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ false

- rainbow_rocks03

oops that was what I meant

- rainbow_rocks03

I meant to say C

- rainbow_rocks03

TY for the help

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