Question: The question is when do you use this?

The words are:
Statistics
Frequency Table
Line Plot
Stem-and-Leaf Plot
Bar Graph
Histogram
Line Graph
Box-and-Whisker Plot
Interquartile Range
Lower Extreme
Upper Extreme
Lower Quartile
Outlier
Upper Quartile
Measures of Central Tendency
Range  Edit

Answer: These are needed when descriptive statistics and five number summery need to find.  Edit