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3. Johnson caught 3 trout on a recent fishing trip. Their lengths were 10, 15, and...

3. Johnson caught 3 trout on a recent fishing trip. Their lengths were 10, 15, and 20 and 25

inches. What is the mean, standard deviation and the variance of these lengths?

4. We know the mean and standard deviation of 1, 2, 3, 4 are 2.5 and 1.29 respectively.

a.Find the mean of 3, 4, 5, 6.

b.Find the standard deviation of 3, 4, 5, 6.

c. Find the variance of 3, 4, 5, 6.

Math   Statistics-And-Probability   
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