Use One-Way ANOVA to analyze the data set, data, given for this homework.

Use 5% level of significance.

1) Do the Levene test in order to compare the variance of the sales level at four different in-store locations.

2) If there are no significant differences between the variance of sales, then conduct the one-way ANOVA hypothesis test to compare the average sales level at four different in-store locations.

3) If you have seen evidence of difference among the average sales levels at these four different in-store locations, then identify which in-store locations have significantly different average sales than other in-store locations, by using the Tukey procedure.

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