7.DS.B.3: Compare two numerical data distributions using visual displays and numerical measures to draw inferences about differences between populations. a. Use histograms and other visualizations to describe similarities and differences in the range, shape, and clustering of the data sets. b. Use measures of center (e.g., mean or median) and measures of variability (e.g., range or interquartile range) to describe the size and significance of the difference between the distributions. c. Use both visual and numerical comparisons to describe how different the two groups are and whether the difference is meaningful in the context of the data.