Attach relevant work to the back but make sure your comment are on this sheet. E
ID: 3171739 • Letter: A
Question
Attach relevant work to the back but make sure your comment are on this sheet. Evaluation of the value($1,000) of 12 houses were made by three realtors, Realtor1, Realtor2, and Realtor3. "Realtor" is the main variable of interest, and "House" is the blocking variable. Find the mean estimate for each realtor (using the data, not the ranks), also the standard deviation. Realtor 1 mean = _____, sd = ____; Realtor 2 mean = _____, sd = ____; Realtor 3 mean = ____, sd = ____ Do a regular two analysis of variance, and fill out the table below Using qqnorm attach a QQ plot of the residuals (modelname$residuals). Do they took normal? Now analyze the data using the Friedman Rank test Chisquare = ___; df = ____; P-value = ___ Give the sum of the ranks for each restate R1 ____; R2 ____; R3 ____ Give the absolute values of the differences of the mean rank, and the values Q with which you would compare them at alpha = .05 and alpha= .01 |R1 - R2| = ____; |R1 - R3| = ___; |R2 - R3| = ___; Q(.05) = ____; Q(.01) = ____ Circle the pairs which are significantly different at the .05 level: R1, R2 R1, R3 R2, R3 Circle the pairs which are significantly different at the .01 level: R1, R2 R1, R3 R2, R3 Suppose a Friedman test was performed on data with k = 3 levels of the main factor, and n = 9 levels of the blocking factor. There would then be (assuming no ties) (k!)^n = 10, 077, 696 possible permutations of the ranks. What would be the maximum possible value of the Friedman statistic? ANS: ____. What would be the exact P-value associated with this value? ANS: _____. What would be the chi-square approximation the this P-value? ANS: ____.Explanation / Answer
Mean of Realtor-1 = 174.742 , Standard deviation of Realtor-1 = 55.2208
Mean of Realtor-2 = 188.392 , Standard deviation of Realtor-2 = 24.8747
Mean of Realtor-3 = 193.625 , Standard deviation of Realtor-3 = 25.6147
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