(Select one answer) Equal variance assumption is violated because ratio of highest and smallest standard deviations is not less than 2. Based on the information on the SUMMARY table in the Excel output, check the equal variance assumption of ANOVA using the rule of thumb. Use Excel to perform the one-way ANOVA test for these data (see the Worksheet Guide).
The goal is to test whether the average sales (in thousands) is different for different market sizes. The stores (markets) were randomly selected for this study. Question 4 (0.5 points) Sheet 1 of the Worksheet 9 Excel file in D2L/Activities/ Assignments has the number of sales made in the specified week of December for three different market sizes that gathered from a marketing efficacy study for December 2018 at a fast food chain. Not all means are same (at least one mean is different there is a difference in mean sales) 4. H1 H2 = 13 = H4 All the means are equal (There is no difference in mean sales) null (Ho) hypothesis > alternative (H1) hypothesis 3. H1 = H2 = 43 All the means are equal (There is no difference in mean sales) 2. Match each statement with the name of the correct hypothesis for this one-way ANOVA test. Question 3 (0.5 points) Sheet 1 of the Worksheet 9 Excel file in D2L/Activities/ Assignments has the number of sales made in the specified week of December for three different market sizes that gathered from a marketing efficacy study for December 2018 at a fast food chain. Each population can reasonably be assumed to be normal because sampled data do not deviate much from a normal distribution. The sample data contain at least one outlier. Mean (or median) sales is smallest when the size of market is medium while it is highest for large markets. Distribution of Sales by Market Size Small Medium Large Sales in Thousands 100 90 80 70 60 50 40 30 20 10 Based on the above plot, select all that are true about the sales in thousands) for markets.Įach population cannot reasonably be assumed to be normal because samples do not have approximately a normal distributions. The following graph shows the side-by-side boxplots of sales (in thousands) by market size.
Question 2 (0.5 points) Sheet 1 of the Worksheet 9 Excel file in D2L/Activities/ Assignments has the number of sales made in the specified week of December for three different market sizes that gathered from a marketing efficacy study for December 2018 at a fast food chain. The one-way ANOVA test is used to compare mean sales for different market sizes here because (Select one answer) there are two independent samples there are more than two means to compare there are matched pair data
Question 1 (0.5 points) Sheet 1 of the Worksheet 9 Excel file in D2L/Activities/ Assignments has the number of sales made in the specified week of December for three different market sizes that gathered from a marketing efficacy study for December 2018 at a fast food chain.
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