Question

Find the outlier on the set of data 24,21,13,11,19,34,23,17

Answer 1

@LearningIsAwesome here we are again

Answer 2

Okay, do you know what an outlier is?

Answer 3

I have no clue and again google just confused me completely

Answer 4

Okay, an outlier in a set of data is exactly how it sounds, if you have a set of data the outlier is one that is WAYY out of the usual thing, and it's a lier because it effects the mean when you add them all up! for example, lets say a football team scores all of these points in games during the season 14,7,12,21, but then one day they face their rivals! They're the worst team in the league and the football team scores 56 points on them..

so out data set is now 14,7,12,21,56 which do you think is the outlier here?

Answer 5

56

Answer 6

Exactly! It lies and shouldn't be included in the mean(average) because it's not ever game you face your rivals!

Answer 7

Now knowing this, what's the outlier here?

Answer 8

Ok so 34 would be the outlier?

Answer 9

Is that one that really sticks out from the rest of the data?

Answer 10

11

Answer 11

Here's a way to figure it out, we know there is an outlier right? So the median is a better measure of center (average) then the mean, because the mean would take the outlier into account whereas the median wouldn't, find the median, then using subtraction find which one is farthest from the mean, I'll walk through it with you

Answer 12

The median would be 20 right
.

Answer 13

I'm going to put the data in increasing order 11,13,17,19,21,23,24,34 (if I missed one let me know) now how many numbers are there? I count 8, so lets count to the middle which would be 4, let's count, 11,13,17,19 the fourth is 19 and the fifth is 21, so in the middle would be 20 you're correct!!! now, we suspect it's between 11 and 34, lets do this, it'll BLOW YOUR MIND!!! 20(average) minus 11(suspected outlier) EQUALS 9, so now 34(suspected outlier) minus 20(average) EQUALS 14, so 11 is 9 and 34 is 14, 34 is farther from the middle (the usual) than 11

Answer 14

So which is the outlier?

Answer 15

So if the median is 20 then 34 would be the furthest from the middle (14) which would make it the outlier

Answer 16

EXACTLY!!! Like MAGIC, right?!?!?!

Answer 17

Sorry I'm energetic when explaining algebra lol

Answer 18

lol No i appreciate it because every time i am right I get extremely happy!!!

Answer 19

Ride on man!!!! Statistics is the funnest part of algebra!!

Answer 20

Have you gotten into box plots yet?

Answer 21

No not yet and I am nervous about that! Math was fun when it was simple now all these unknowns make me cringe

Answer 22

Hey man come to me anytime, box plots are freaking AWESOME, cause you can see everything you're doing and with the right explainations you will go into your test CONFIDENT for the first time in a long time

Answer 23

I definitely will I have another question I am stumped on but i will give you a break!

Answer 24

No I love this stuff dude!

Answer 25

Permutation is easier I don't get C at all. Especially when its looks like a fraction. I don't know where to begin

Answer 26

Me either, what the bleep is this???

Answer 27

Permutaion and combination

Answer 28

I will be honest I have NO clue what that is...

Answer 29

@ganeshie8 , do you know about this??

Answer 30

I think he can help

Answer 31

Lol ok that is fine I can miss this one I guessed but I have no idea if I am right. I had a question in the beginning and someone answered but it turned up wrong can I tag you in it? It is probability

Answer 32

Sure I will try!