Use the Grouped Data Formulas to Find the Indicated Mean

question 3

Multiple Choice

Use the grouped data formulas to find the indicated mean or standard deviation.
-A random sample of 30 high school students is selected. Each student is asked how many hours he or she spent on the Internet during the previous week. The results are shown in the histogram. Estimate the sample
Standard deviation.

• A)2.4 hr
• B)2.2 hr
• C)2.6 hr
• D)2.0 hr

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Definitions:

Bill Clinton

The 42nd President of the United States who served from 1993 to 2001, known for his centrist policies and economic prosperity during his tenure.

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