Quartiles- divides the data set into four parts.
Q1= cuts data set so 25% of the data set falls below it and 75% of data falls above it.
Q2= cuts data set such that 50% of data falls below it and 50% of data falls above it.
Measure of Variability- A measure of variability is a value that describes the spread of a data set.
Measure of Relative Position- A value that indicates the position of a single value in relation to other values in a data set.
Interquartile Range (IQR)- This value is the diffrence between the third and first quartile (Q3-Q1).
eliminates the bottom 25% and eliminates the top 25% where outliers would occur if present.
only considers middle 50% of data, leaving 50% of the data overlooked.