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

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Statistics for Managers: Quiz on ANOVA, t - Tests, and Error Analysis 1. Question : How is the sum of squares unlike either the standard deviation or the 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. Instructor Explanation: Answer found in section 5.2 One - Way ANOVA, in Statistics for Managers Points Received: 1 of 1 Comments: 2. Question : If sums of squares statistics are calculated for shoppers at three different retail outlets, what statistic will indicate the variability among those at each outlet? Student Answer: The sum of squares total. The sum of squares across groups. The sum of squares between. The sum of squares within. Instructor Explanation: Answer found in section 5.2 One - Way ANOVA, in Statistics for Managers Points Received: 1 of 1 Comments: 3. Question : Which is the symbol used for the test statistic in ANOVA? Student Answer: M z t F Instructor Explanation: Answer found in section 5.2 One - Way ANOVA, in Statistics for Managers Points Received: 1 of 1 Comments: 4. Question : If ANOVA reveals that four different departments have significantly different levels of productivity, what will a post - hoc test indicate? Student Answer: Whether teach of those comparisons were important. Which groups were significantly different from which. The effect size.
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