Types of Graphs: AP STATS

Bar Charts

Displays distribution of a categorical variables side-by-side for comparison.

Histograms

Good for displaying large sets of data, and showing the distribution at a glance. Gaps in a histogram are gaps in data, not spaces.

Frequency Tables

Records totals and the category names.

Pie Charts

Show a whole groups in parts, or fractions in a quick impression.

Stem-and-Leaf Displays

Show the actual data of a set and the distribution like a histogram. Better for smaller sets of data, and for comparing. Split stems are used when the data is very large and the first number goes from 1-4, the second from 5-9.

Dotplots

Similar to Stem-and-Leaf displays but instead of digits for leafs, it has dots. Also good for small data sets.

Relative Frequency Histogram

The same as histograms except the histogram's y-axis is in percentages of 100%.

Segmented Bar Charts

Treats each bar as a "whole" and divides it proportionally into segments corresponding to the percentage in each group. Easier to compare percentages than Pie Charts.