1. 5 Number Summary

2. Definition (Five-Number Summary) The five-number summary of a set of numbers consists of the five quantities – Minimum – 1st quartile – Median – 3rd quartile – Maximum These five numbers divide the set of numbers into four groups of equal size, each containing one-fourth of the set.

3. The min and Max are the smallest and largest values in the data. The Median is the middle most value in the data – This will divide the data into 2 halves Q 1 is the median of the lower half of the data (the Median of the data is not in either half) Q 3 is the median of the upper half of the data

4. Example 1 Find the maximum, minimum, median and quartiles of the following sample. 5, 8, 10, 15, 17, 19, 20, 24, 25, 30, 32 Min Max Q1Q1 Q3Q3 Median

5. Example 2 Find the maximum, minimum, median and quartiles of the following sample. 13,14,15,17,17,17,18,18,18,19,20,21,23,24,25,26 Min Max Median 18 Q1Q1 17 Q3Q3 22