2. A frequency table is an organized count of items or values. In its simplest form a frequency table shows how frequently each particular value occurs in a data set.

3. Example 1: Shoe Size

4. Example 2 Organize this data into a frequency table 2, 1, 2, 3, 2, 3, 4, 10, 9, 7, 2, 7, 3, 1, 10, 2, 3, 6, 8

5. Example 3 Below are the SAT scores of 15 students. Create a frequency table using the scores. 900, 1150, 1050, 950, 1200, 1100, 1150, 1150, 1200, 950, 1300, 1350, 1250, 1300, 1000, 910, 935, 1210, 1225, 1310, 1400

6. Histograms A histogram shows the ranges into which data points fall, but it does not show individual data points. As a result, both the mean and standard deviation can be estimated but cannot be calculated exactly.

8. Example 4 Create a histogram using the following data. 2, 4, 9, 3, 16, 12, 16, 20, 23, 34, 31, 35, 37, 33, 39, 31, 45

9. Example 5 Create a histogram with the following data. 120, 501, 310, 100, 345, 555, 290