49.What type of chart is best used to show the comparison of multiple data sets?  A. Pie chart  B. Histogram  C. Bubble chart  D. Bar chart

Break Down the Problem

1. Identify the data comparison need - The question is about the type of chart that effectively shows comparisons between multiple data sets.

Relevant Concepts

2. Types of charts:
   • Pie Chart: Best for showing proportions of a whole, not ideal for multiple datasets.
   • Histogram: Used for showing distributions of a single dataset.
   • Bubble Chart: Effective for visualizing three dimensions of data but not best for straightforward comparisons of multiple datasets.
   • Bar Chart: Excellent for comparing multiple data sets side-by-side.

Analysis and Detail

3. Comparison of Options:
   • Pie chart: Limited to displaying single datasets in percentage terms.
   • Histogram: Focuses on frequency distribution of a single dataset, not comparisons.
   • Bubble chart: While it can represent multiple datasets, it’s less direct for simple comparisons.
   • Bar chart: Ideal for comparing different categories across multiple groups or datasets.

Verify and Summarize

4. Conclusion: The bar chart allows for straightforward and clear comparisons between different datasets, making it the most suitable choice for the question posed.

Final Answer

D. Bar chart is the best option to show the comparison of multiple data sets.