A real estate agent has received data on 150 houses that were recently sold in a suburban community. Included in this data set are observations for each of the following variables: the appraised value of each house (in thousands of dollars), the selling price of each house (in thousands of dollars), the size of each house (in hundreds of square feet), and the number of bedrooms in each house. The data are in the file P2_7.XLS. Suppose that this real estate agent wishes to examine a representative subset of these 150 houses. Use Excel to assist her by finding a systematic sample of size 10 from this frame.