Consider the following frequency table representing the distribution of cost of lunch (in dollars). Table: Class 7.4-8.1 (Frequency 3), 8.2-8.9 (Frequency 4), 9.0-9.7 (Frequency 6), 9.8-10.5 (Frequency 11), 10.6-11.3 (Frequency 12). Step 1 of 2: Determine the cumulative frequency for the third class.

Answer

To find the cumulative frequency for a specific class, you must add the frequency of that class to the frequencies of all preceding classes. 1. Identify the third class from the table, which is 9.0-9.7. 2. List the frequencies of the first three classes: First class (7.4-8.1) frequency = 3; Second class (8.2-8.9) frequency = 4; Third class (9.0-9.7) frequency = 6. 3. Calculate the sum: 3 + 4 + 6 = 13. Therefore, the cumulative frequency for the third class is 13.