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42

Step-by-step Answer
PAGE: 770SET: ExercisesPROBLEM: 42
Please look in your text book for this problem Statement

The set of data is .

Find the mean.

Add the numbers and then divide by the number of values in the data set.

                                 (Add: )

                                   (Divide: )

The mean is .

Find the variance.

Square the difference between each number and the mean.

Then add the squares, and divide by the number of values.

 

 

                               (Add: )

.                           (Divide: )

The variance is .

Find the standard deviation.

The standard deviation is the square root of the variance.

                            (Variance)

                     (Take the square root of the variance)

                          (Cancel the square root)

.                          (Use calculator)

The standard deviation is .

The mean is .

The variance is .

The standard deviation is .



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