Which statement correctly describes a histogram?

• A. It uses discrete categories for each bar
• B. It shows frequency distribution of continuous data
• C. It compares categories such as land use types
• D. It is used only for qualitative data

Answer: (B)

Histograms show the frequency distribution of a continuous variable. The x-axis is made of class intervals (ranges of values), and the bars touch each other because the data are continuous, not separate categories. The height of each bar represents how many data fall into that interval (or the relative frequency), so you can see the overall shape of the distribution—whether it’s skewed, symmetric, or has multiple peaks. This is different from bar charts that use discrete categories or qualitative data; histograms are designed for quantitative, continuous data and for examining how observations are spread across value ranges.