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.
