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The following data reflect the number of customers who test drove new cars each day for a sample of 20 days at the Redfield Ford

The following data reflect the number of customers who test drove new cars each day for a sample of 20 days at the Redfield Ford Dealership.

Given these data, what is the variance?

5 7 7 10 4 7 5 7 14 10 4. 4- 4-

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