Checking for Quality

Main Post: You are in the real estate business focused on the housing market. You have been hired by the government to see if prices are in control for homes with similar characteristics, such as square footage, number of bedrooms, or number of bathrooms. For example, at least 3 bedrooms and 1.5 baths will be considered.

Begin by going to Zillowto find 10 cities in your state with at least four houses for sale in or near each city. For this exercise, each city will be a sample. The prices for four houses in or near each city will be the four items for each sample.

1. Using the x bar and r chart raw data input tab in the Excel Workbook for this unit, list the upper and lower limits for the ranges and means using a standard deviation of 3 sigmas.
2. State whether the range of prices is in control for the state.
3. State whether the mean of prices is in control for the state.
4. Attach your completed spreadsheet to your post.