• Calculate the data and find the z score.

Use the spreadsheet data to:

• Find the mean for the sample.
• Find the standard deviation for the sample.
• Find the z score for the ACME Altimeter.
• Run a histogram on the data.

Now that you have calculated the data, including the z score, run a histogram of the data in Column A. To learn how to make a histogram. When you are finished, your spreadsheet should look similar to this one. Remember, the numbers and distribution shape will depend on the numbers you used. You may have a more "normal" looking distribution, for example.

• Interpret the data.
• What is the mean of your sample?
• What is the standard deviation of your sample?
• What is the z score, and is it unusual? Why or why not?
• What is the "shape" of the distribution? Is it skewed to the right or left?
• Do we have enough evidence to support the idea that the ACME Altimeter has an unusually large error issue?