Way to go! You’ve learned quite a lot about the histogram chart!
Let’s have a quick review. A histogram is used to visualize the distribution of a numerical variable. (Bar charts visualize the distribution of a categorical variable.)
When you create your own histogram, remember these tips:
- Always start your y-axis at 0.
- Make your histogram fit the variability of the data. Adjust the number of intervals or the length of the intervals to highlight your story.
- Spaces in histograms have meaning. Don’t put a space between the bars of a histogram unless the frequency of that interval is 0.
- Remove unnecessary grid lines. You rarely need a vertical grid in a histogram.
No matter what chart type you’re using, it’s always good to:
- Choose a descriptive title for your chart.
- Avoid excessively bright colors. Choose colors that are visually pleasing.