Outliers Flashcards
unit 3.1
1
Q
What is an outlier ?
A
an extreme value that lies outside the overall pattern of data
2
Q
What is the formula to see if a piece of data is a large outlier ?
A
Q3 + k(Q3-Q1)
3
Q
What is the formula to see if a piece of data is a small outlier ?
A
Q1 - k(Q3-Q1)
4
Q
What are anomalies ?
A
clearly an error in the data - a misleading value
5
Q
What is meant by cleaning the data ?
A
the process of removing anomalies from a data set
