Exam 3: Numerically Summarizing Data

On a recent day during the flu season, the Midtown Medical Clinic saw many patients. Patients had their temperatures taken (in °F). The distribution of temperatures is given below. Determine the standard deviation of the temperatures of a sample of 100 patients.

The grades are given for a student for a particular term. Find the grade point average. The point values of grades are given below.

Find the sample standard deviation. -5, 2, 18, 20, 10, 15, 15, 19, 9

Many firms use on-the-job training to teach their employees new software. Suppose you work in the personnel department of a firm that just finished training a group of its employees in new software, and you have been requested to review the performance of one of the trainees on the final test that was given to all trainees. The mean and standard deviation of the test scores are 70 and 4, respectively, and the distribution of scores is bell shaped. What percentage of test-takers scored better than a trainee who scored 58?

The cholesterol levels (in milligrams per deciliter) of 30 adults are listed below. Draw a boxplot that represents the data.

Compute the range for the set of data. -8, 8, 8, 17, 23, 23, 23