CCGPS CA 4.1.4 Example 1

Each student in Mr. Lamb’s class measured a pencil. The data set below shows the pencil lengths in centimeters (cm). What is the expected length of any given pencil? Describe the shape, center, and spread of the data.

[list=1] [*]Order the data from least to greatest. [*]Calculate the interquartile range (IQR). [*]Multiply 1.5 times IQR. [*]Determine if there are any outliers at the lower end of the data. [*]Determine if there are any outliers at the upper end of the data. [*]List all the outliers. [*]Calculate a measure of center. This will give us an approximate expected length of any given pencil, based on Mr. Lamb’s data. [*]Describe the shape, center, and spread in the context of the problem. [/list]