Which statement about data representation is true according to the material?

• A. Bar Graph Is Qualitative; Histogram Is Quantitative
• B. Bar Graph Is Quantitative; Histogram Is Qualitative
• C. Bar Graph Is Negative; Histogram Is Positive
• D. Bar Graphs And Histograms Are Both Qualitative

Answer: (A)

Understanding how data is represented helps you pick the right chart for the right data. Bar graphs compare categories and show how many observations fall into each category; they’re best for qualitative data because the categories are labels, not numbers. Histograms display the distribution of numeric values by grouping them into consecutive intervals (bins) and showing how many observations fall into each interval; the bars are usually touching to indicate a continuous range, which is the hallmark of quantitative data. So, saying that a bar graph is qualitative and a histogram is quantitative matches how these graphs are used. The other statements mix up the roles or introduce irrelevant ideas (like negative or positive), which doesn’t fit how these charts convey data.