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# A REALTOR WANTS TO COMPARE THE AVERAGE SALES-TO-APPRAISAL

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Author: Christine Farr
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http://theperfecthomework.com/a-realtor-wants-to-compare-the-average-sales-to-appraisal-ratios-of-residential-properties-sold-in-four-neighbourhoods/

Question 1TABLE 11-3A realtor wants to compare the average sales-to-appraisal ratios of residential propertiessold in four neighbourhoods (A, B, C, and D). Four properties are randomly selectedfrom each neighbourhood and the ratios recorded for each, as shown below.A) 1.2, 1.1, 0.9, 0.4C)1.0, 1.5, 1.1, 1.3B) 2.5, 21, 1.9, 1.6D)0.8, 1.3, 1.1, 0.7At number B, it looks like 21, so I am not sure if it should read 21 or 2.1Interpret the results of the analysis summarized in the following table:SourceNeighborhoodsErrorTotaldfSS3.1819MS1.0606F10.76PR > F0.001124.3644Referring to Table 11-3, the value of the test statistic for Levine’s test for homogeneity ofvariances is0.250.374.3610.76Question 2TABLE 11-2An airline wants to select a computer software package for its reservation system. Foursoftware packages (1, 2, 3, and 4) are commercially available. The airline will choosethe package that bumps as few passengers as possible during a month. An experimentis set up in which each package is used to make reservations for 5 randomly selectedweeks. (A total of 20 weeks was included in the experiment.) The number of passengersbumped each week is obtained, which gives rise to the following Excel output:ANOVASource OFVARIATIONBetween Groups

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