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Completion requirements

Read these sections and complete the questions at the end of each section. First, we'll look at the available methods to portray distributions of quantitative variables. Then, we'll introduce the stem and leaf plot and how to capture the frequency of your data. We'll also discuss box plots for the purpose of identifying outliers and for comparing distributions and bar charts for quantitative variables. Finally, we'll talk about line graphs, which are based on bar graphs.

- bar charts

A line graph is a bar graph with the tops of the bars represented by points joined by lines. - the variable on the X-axis is a qualitative variable.

Line graphs should not be used with a qualitative variable because line graphs are designed to show trends.