Question

Here are 10 test scores: 73, 74, 76, 77, 78, 79, 80, 80, 82, 84. The mean of these scores is 78.3.



Does this set have an outlier and, if so, how does removing it affect the mean?



A.
The set has 73 as an outlier and removing it increases the mean by about 0.5.


B.


This data set has no outliers.


C.
The set has 73 as an outlier and removing it decreases the mean by about 10.


D.
The set has 73 as an outlier and removing it decreases the mean by about 0.5.

Answer 1

@Zackinblack

Answer 2

@epicjellypanda

Answer 3

Do you know what an outlier is?

Answer 4

yes

Answer 5

Okay, good, firstly, do you see any in the data set?

Answer 6

no not really I'm new to this

Answer 7

73, 74, 76, 77, 78, 79, 80, 80, 82, 84. is the data set. We're looking for something that is a far off number to the rest. Do you see any numbers like that?

Answer 8

no if 100 was in there yes but no

Answer 9

Right. So immediately, what answers can you rule out?

Answer 10

none of them

Answer 11

We can't find the outlier, so, chances are.....

Answer 12

are what

Answer 13

B

Answer 14

which one do you think

Answer 15

It's B

Answer 16

Yes, I believe that's correct

Answer 17

thanks

Answer 18

Anytime friend :3