## Graphing

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.

### Box Plots

1. D: The upper hinge is the 75th percentile. It is the top of the box.

2. F: The median is represented by a line through the middle of the box.

3. Upper adjacent value. It is the largest value below the upper inner fence which is one step above the upper hinge.

4. The H-spread is the difference between the upper hinge (D) and the lower hinge (G).

5. The lowest value is H. There is an outside value, but no far out value.

6. The two correct choices are (1) there is a large amount of data and (3) when more than two groups are compared. Stem and leaf displays show individual values and skew well.