Part II. Ways to Visualize Data

Investigation 12: Using a Histogram to Compare Data Sets

Although a box and whisker plot provides some evidence of how a variable’s values are distributed, it is not particularly easy to see the shape of that distribution. For this we use a histogram, which displays the number of results that fall within a sequence of (usually) equally spaced bins. Figure 4, for example, shows histograms for each color of M&Ms in our data set.

Investigation 12. For the histograms in Figure 4, where do you see similarities and where do you see differences in the distribution of M&M? How do the results seen here compare with your interpretation of the box and whisker plots and the dot plots in Figure 2?