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2. (a) Suppose the three real estate appraisers independently examined each of five properties chosen at random from a particular neighborhood and gave appraised values. The manager of the appraisal service that employs them suspects that systematic differences among their methods of appraisal are causing undesirable inconsistencies in appraised values provided by her service. The issue is whether there are, in fact, systematic differences among the values reported by the three appraisers. The data, APPRAISED VALUES (In thousands of dollars), are shown below. Question: What kind of statistical analysis should you perform? Choose from: (Two sample t- test, pairwise t-test, One-way ANOVA, One-way ANOVA with block, Two-way ANOVA, Factorial design). If your answer is One-way ANOVA with block, which variable does play a role of block? Appraiser A Property 90 93 92 2 94 96 88 3 91 92 84 4 85 88 83 88 90 87

2. (a) Suppose the three real estate appraisers independently examined each of five properties chosen at random from a particular neighborhood and gave appraised values. The manager of the appraisal service that employs them suspects that systematic differences among their methods of appraisal are causing undesirable inconsistencies in appraised values provided by her service. The issue is whether there are, in fact, systematic differences among the values reported by the three appraisers. The data, APPRAISED VALUES (In thousands of dollars), are shown below. Question: What kind of statistical analysis should you perform? Choose from: (Two sample t- test, pairwise t-test, One-way ANOVA, One-way ANOVA with block, Two-way ANOVA, Factorial design). If your answer is One-way ANOVA with block, which variable does play a role of block? Appraiser A Property 90 93 92 2 94 96 88 3 91 92 84 4 85 88 83 88 90 87

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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2. (a) Suppose the three real estate appraisers independently examined each of five properties chosen at random from a particular neighborhood and gave appraised values. The manager of the appraisal service that employs them suspects that systematic differences among their methods of appraisal are causing undesirable inconsistencies in appraised values provided by her service. The issue is whether there are, in fact, systematic differences among the values reported by the three appraisers. The data, APPRAISED VALUES (In thousands of dollars), are shown below. Question: What kind of statistical analysis should you perform? Choose from: (Two sample t- test, pairwise t-test, One-way ANOVA, One-way ANOVA with block, Two-way ANOVA, Factorial design). If your answer is One-way ANOVA with block, which variable does play a role of block? Appraiser A 90 Property 93 92 2 94 96 88 3 91 92 84 4 85 88 83 88 90 87 (b) Suppose each of 4 Chardonnay wines of the same vintage was judged by 5 judges. Each wine was blinded and given to each judge in randomized order. The wines were scored on a 40-point scale, with higher scores meaning better wine. Based on those scores, we want to test whether there is a difference between the 4 Chardonnay wines in mean scores. Question: What kind of statistical analysis should you perform? Choose: (Two sample t-test, pairwise t-test, One-way ANOVA, One-way ANOVA with block, Two-way ANOVA, Factorial design). If your answer is One-way ANOVA with block, which variable does play a role of block? (c) A researcher was interested in whether an individual's interest in politics was influenced by their level of education and gender. Therefore, the dependent variable (response variable) was "interest in politics" and the two independent variables were "gender" and "level of education." In particular, the researcher wanted to know whether there was an interaction between education level and gender. Put another way, was the effect of level of education on interest in politics different for males and females? To answer this question, a random sample of 60 participants were recruited to take part in the study-30 males and 30 females-equally split by level of education: school, college and university (i.e., 10 participants in each group). Each participant in the study completed a questionnaire that scored their interest in politics on a scale of 0 to 100, with higher scores indicating a greater interest in politics. Question: What kind of statistical analysis should you perform to answer for the original question? (Two sample t-test, pairwise t-test, One-way ANOVA, One-way ANOVA with block, Two-way ANOVA, Factorial design)
Transcribed Image Text:2. (a) Suppose the three real estate appraisers independently examined each of five properties chosen at random from a particular neighborhood and gave appraised values. The manager of the appraisal service that employs them suspects that systematic differences among their methods of appraisal are causing undesirable inconsistencies in appraised values provided by her service. The issue is whether there are, in fact, systematic differences among the values reported by the three appraisers. The data, APPRAISED VALUES (In thousands of dollars), are shown below. Question: What kind of statistical analysis should you perform? Choose from: (Two sample t- test, pairwise t-test, One-way ANOVA, One-way ANOVA with block, Two-way ANOVA, Factorial design). If your answer is One-way ANOVA with block, which variable does play a role of block? Appraiser A 90 Property 93 92 2 94 96 88 3 91 92 84 4 85 88 83 88 90 87 (b) Suppose each of 4 Chardonnay wines of the same vintage was judged by 5 judges. Each wine was blinded and given to each judge in randomized order. The wines were scored on a 40-point scale, with higher scores meaning better wine. Based on those scores, we want to test whether there is a difference between the 4 Chardonnay wines in mean scores. Question: What kind of statistical analysis should you perform? Choose: (Two sample t-test, pairwise t-test, One-way ANOVA, One-way ANOVA with block, Two-way ANOVA, Factorial design). If your answer is One-way ANOVA with block, which variable does play a role of block? (c) A researcher was interested in whether an individual's interest in politics was influenced by their level of education and gender. Therefore, the dependent variable (response variable) was "interest in politics" and the two independent variables were "gender" and "level of education." In particular, the researcher wanted to know whether there was an interaction between education level and gender. Put another way, was the effect of level of education on interest in politics different for males and females? To answer this question, a random sample of 60 participants were recruited to take part in the study-30 males and 30 females-equally split by level of education: school, college and university (i.e., 10 participants in each group). Each participant in the study completed a questionnaire that scored their interest in politics on a scale of 0 to 100, with higher scores indicating a greater interest in politics. Question: What kind of statistical analysis should you perform to answer for the original question? (Two sample t-test, pairwise t-test, One-way ANOVA, One-way ANOVA with block, Two-way ANOVA, Factorial design)
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