0.4 0.8 0.6 7.2 5.8 -1.5 12.2

0.8 0.6 0.9 -0.4 5.7 4.1 7.9

12.8 3.4 0.8 3.2 7 14.9 -1.7

-0.4 6 0 0.1 15.8 11.7 4.6

-0.1 4.8 3.7 -1.2 14.4 7.6 11.4

3.6 -0.5 5 -2.7 4.7 3 3.3

-0.7 -0.7 5.9 -12.3 -2.1 20.3 -1

-5.7 3.2 3.8 -6.1 0.5 18.9 4.5

-4.2 3.3 1.9 -3.4 2.4 9.6 15.6

-0.6 2.7 4.2 0.2 2.6 8.3 1.6

The above datais a sample of daily maximum temperatures in March (from 2006-2008).

a. Calculate the mean(1 decimal place) and standard deviation(2 decimal places) of this data.

b. Determine how much data lies within 1 standard deviation of the mean and within 2 standard deviations of the mean. Round to the nearest percent.

c. Determine a reasonable interval size and number of intervals. Produce a properly labeled histogramfor the grouped data using technology. Paste this graph into your solutions.

d. Does this data appear to model a normal distribution? Explain why or why not.

The solution provides detailed explanation how to find mean, standard deviation and how to check if it is a normal distribution.