Question

@Luigi0210

Answer 1

Data: 4, 5, 7, 8, 9, 12, 21
Quartile 1 = 5
Quartile 2 = 8
Quartile 3 = 12
Inter Quartile Range = Q3 - Q1 = 12 - 5 = 7
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Lower fence and Upper Fence formulas.
Lower Fence = Q1 - 1.5 * Inter Quartile Range
Upper Fence = Q3 + 1.5 * Inter Quartile Range
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Lower Fence = 5 - 1.5 * 7
= 5 - 10.5
= -5.5
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Upper Fence = 12 + 1.5 * 7
= 12 + 10.5
= 22.5
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How will I know if there is/isn’t an outlier?

Answer 2

I THINK outliers are the ones that below the Lower Fence and above the Upper fence..

Answer 3

Which means there isn't any outlier?

Answer 4

Nope, unless there is an invisible number out there somewhere above 22.5 or below -5.5 >.<

Answer 5

Omg, Thanks Lui! ;* Finally someone was able to make me understand this stupid problem <3 :D

Answer 6

You're welcome Georgey~
Thanks for making me learn a statics topic in a short period of time >.>