Which of the following cannot be used to display the relationship between two categorical variables?

• A. Stacked column chart
• B. Contingency table
• C. Scatter plot
• D. Bar chart

Answer: (C)

Verified step by step guidance

1. Step 1: Understand the nature of the variables involved. Here, both variables are categorical, meaning they represent categories or groups rather than numerical values.
2. Step 2: Review each option to see if it is suitable for displaying relationships between two categorical variables. A contingency table summarizes the frequency counts for combinations of categories, making it ideal for this purpose.
3. Step 3: Consider a stacked column chart, which visually stacks categories within each group, effectively showing the relationship between two categorical variables.
4. Step 4: Examine a bar chart, which can be used to compare categories, but typically shows one categorical variable at a time. However, grouped or stacked bar charts can display relationships between two categorical variables.
5. Step 5: Analyze the scatter plot, which is designed to display relationships between two numerical variables by plotting points on a Cartesian plane. Since categorical variables do not have numerical values to plot, scatter plots cannot effectively display relationships between two categorical variables.