In the steps that follow, we'll construct a histogram from the table of data created in part two of this series.

click to enlarge
Step 1: Select the columns with information pertaining to the Interval and Frequency, as shown in the image to the right.
Click any image for a larger view.
Note: If your columns are not adjacent (like the ones in this example), select the first column and then hold down the Ctrl key while selecting the second column so that both are included in the selection. In the image to the right, the selected area is highlighted in blue.
(Editing Notes: In the original publication of this article, we used the Upper Limit of Interval instead of the Interval column so that the x-axis labels on the final graph would be shorter and fit better in the small space provided. Some found this a little confusing and thought the resulting graph was not a histogram due to those labels. To make things clearer, we're reverting to using the full interval class names. Note that this doesn't change anything except the data labels – both versions are the same chart and both are, indeed, frequency histograms.)