286 Part 4: The State of the World
CHECK POINT- Find the range of {34, 54, 78, 92, 101}
- Find the range of {3, 4, 5, 4, 7, 8, 9, 2, 10, 1}
- Find the interquartile range of {3, 4, 5, 4, 7, 8, 9, 2, 10, 17, 32, 34, 36, 38}
- Find the IQR of {2, 2, 2, 3, 3, 4, 4, 4, 4, 34, 54, 78, 92, 101}
- Find the standard deviation of the test scores {69, 70, 73, 74, and 74}.
The Least You Need to Know
- Measures of center and spread help you make sense of large amounts of data.
- The mean is the average of a set of numbers, the median is the middle number in
a set of numbers, and the mode is most common number in a set of numbers. - Numbers like quartiles and percentiles let you place one number within the
group. - Range, IQR, and standard deviation tell you how widely spread the information is.