Question: The time (in seconds) to complete a task is recorded for eleven children. The results are: 10 30 20 20 20 20 63 20 20

The time (in seconds) to complete a task is recorded for eleven children. The results are:

10 30 20 20 20 20 63 20 20 23 63

What is the sample mean? What is the sample standard deviation?

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