A retail manager collects monthly revenue data from a few locations using a new promotional campaign and from locations using the old campaign. They want to decide if adopting this new campaign across all stores would affect revenue. Which method helps them make a judgment about the entire chain using these samples?
Display lines representing the highest and lowest revenue figures from each group
Evaluate contrasts in performance by conducting a significance-based comparison
Graph revenue frequencies to find the largest cluster of sales per group
Gather the mean sales for each group and report them in a table
A significance-based comparison is an inferential approach that uses sample data to determine whether differences in results reflect genuine trends across the broader group. Simply describing or plotting values does not help decide if a difference is likely to persist in the population. Focusing on a single-month outcome also does not provide a robust measure of long-term effects.
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