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Statistics for Managers: Quiz on ANOVA, t-Tests, and Error Analysis

A quiz assessing knowledge of statistical tests used in managerial decision-making.

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Statistics for Managers: Quiz on ANOVA, t-Tests, and Error Analysis1.Question :How is the sum of squares unlike either the standard deviation orthe variance?Student Answer:The sum of squares doesn’t require interval scale data.Additional data always increases the sum of squares value.The sum of squares is not a measure of data variability.The size of the statistic is the inverse of the sample size.InstructorExplanation:Answer found in section 5.2One-Way ANOVA,inStatistics for ManagersPoints Received:1 of 1Comments:2.Question :If sums of squares statistics are calculated for shoppers at threedifferent retail outlets, what statistic will indicate the variabilityamong those at each outlet?StudentAnswer:The sum of squares total.The sum of squares across groups.The sum of squares between.The sum of squares within.InstructorExplanation:Answer found in section 5.2One-Way ANOVA,inStatistics for ManagersPoints Received:1 of 1Comments:3.Question :Which is the symbol used for the test statistic in ANOVA?StudentAnswer:MztFInstructorExplanation:Answer found in section 5.2One-Way ANOVA,inStatistics for ManagersPoints Received:1 of 1Comments:4.Question :If ANOVA reveals that four different departments havesignificantly different levels of productivity, what will a post-hoctest indicate?Student Answer:Whether teach of those comparisons were important.Which groups were significantly different from which.The effect size.

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