Question: Yolanda, the fitness program manager at the local Y, randomly selected seven spin classes. She gathered the most recent attendance count for each class during the current programming session. The following sample data was collected:

18

4

16

6

12

10

11

Summarize these sample statistics by computing the most democratic measures of center and spread (i.e., the sample mean and sample standard deviation, respectively); also include the sample variance and coefficient of variation, indicating which measure is which. State the results by completing the following sentence: On average, the number of participants in the sample of randomly selected spin classes at the local Y was _____ attendees, give or take _____ attendees. [COMMENTS & HINTS: Be sure to rewrite or retype the complete sentence summarizing the results.

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