Certificate in Business Data Analytics (CBDA) — Question 14

The marketing department for a major restaurant chain is interested in testing a Kids Eat Free campaign to determine if it will help to increase sales. They are interested in piloting the campaign to determine which day of the week will improve sales the most. The campaign is launched across 7 cities with each city promoting a different day of the week. The sales data is collected and provided to a team for analysis.
What concern might the analytics team have regarding data quality across cities?

Answer options

Correct answer: A

Explanation

The correct answer is A, Variation, because differences in sales data across cities could indicate inconsistencies in how the campaign is received or executed. The other options, such as Linearity, Normality, and Heteroskedacity, pertain to statistical properties that may not directly relate to the comparative analysis of sales performance in this context.