1. The ages of all the patients in the isolation ward of the hospital are 38, 26, 13, 41, and 22. What are the population mean, variance, and standard deviation?

2. The weights of a sample of seven FedEx shipments, to the nearest pound, are 10, 7, 11, 10, 13, 5, and 4. Compute the sample mean, the median, and the modal weight.

3. The following is the number of shares traded (in 1,000’s) for a sample of eight stocks listed on the New York Stock Exchange; 62, 41, 60, 49, 39, 45, 26, and 38. Compute the mean, range, and standard deviation.

Please show me all the steps so that I can fully understand how to do these types of problems.

Please see the attached Word document for the solutions to these exercises.

Statistics Problems

1. The ages of all the patients in the isolation ward of the hospital are 38, 26, 13, 41, and 22. What are the population mean, variance, and standard deviation?

Note that the size of the population is

First find the sum of the 5 elements of the population;

Then find the sum of the squares of the 5 elements of the population

We can now find the mean, variance, and standard deviation of the population by plugging , , …

Computing mean, median, mode, variance, standard deviation and range.