Question

Which values are outliers?

Answer 1

How to compute outliers:

1) Data in chronological order:
0.8 ; 1.6 ; 3.9 ; 3.9 ; 4.4 ; 4.5 ; 6.1 ; 6.4 ; 6.5 ; 10.6 ; 11.2 

2) Get median: There are 11 numbers, the 6th number is the median.
median: 4.5

3) Get Q1 and Q3.
Q1: 3.9  ; Q3 = 6.45

4) Find IQR. IQR = Q3 - Q1
IQR = 6.45 - 3.9
IQR = 2.55

5) Find inner fence and outer fence:
Multiply IQR by 1.5 → 2.55 x 1.5 = 3.825
Add result to Q3: 6.45 + 3.825 = 10.275  outer fence
Deduct result from Q1: 3.9 - 3.825 = 0.075 inner fence

Outlier are outside the 0.075 - 10.275 range

Data        Outlier        Not Outlier
0.8                                     x
1.6                                     x
10.6          x
11.2          x

Answer 2

Answer: 0.8 and 1.6 are not outliers, as for 10.6 and 11.2 well... its pretty obvious that they are outliers. I just took the test, hope this helped! By any chance are you with K12? ^^