Outliers Flashcards
1
Q
What are outliers
A
Values that don’t fit the general pattern
2
Q
What can outlier show
A
Possible errors such as in measuring or data collection
3
Q
What can outliers be found by
A
Using box plots
4
Q
What might outliers do if you don’t remove them
A
Distort your data
5
Q
How to find outliers using interquartile range
A
Upper outlier > Q3 +1.5 x IQR
Lower outlier < Q1 - 1.5 x IQR
6
Q
What else can be used to find the outliers
A
Mean and standard deviation
7
Q
what is the limit of distance from the mean until it becomes an outlier
A
3sd
Outliers are outside the region
pop mean + or - 3sd
