1. Many companies keep their salary information private, so below...

Question

# 1. Many companies keep their salary information private, so below...

1. Many companies keep their salary information private, so below is an imagined example of a fictional company, Wing Aero, and their salary data.

1. Record this information from your pre-class work.

Median of all employees: _______

Median for each category of employee.

Worker: ______          Supervisor:______                  Manager:______         Executive:______

1. Briefly explain why we cannot determine the median of all employees from the category medians, like we could with the means.

1. DO NOT RECALCULATE: What if only executives (CTO, CIO, etc.) get 2.5% raise, what would happen to the mean of all employees?  Will it go up or down after factoring in the raise?

What would happen to median of all employees? Will it go up or down after factoring in the raise?

1. Here is the example of a histogram relating to the Wing Aero data from the pre-class:

1. Use the information in the histogram to give an estimate for the mean salary of the Wing Aero employees.  Explain how you came up with your estimate and why you did it in that way.

Standard Deviation

1. Here is a histogram of the baby weight data from class with a normal bell curve placed on the data.

1. The mean value for the baby weight information is 22.9 lbs.  Mark where the mean is on the chart.

1. Mark the ends of the interval determined in question 3(d) In Class on the chart. (The interval containing about 68% of the data).

1. Mark one standard deviation on the chart.  About how much is one standard deviation?  Write a sentence explaining what this standard deviation is telling us about this data.

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