Middle School Mathematics (Praxis II Exam) - Probability, Statistics, and Discrete Mathematics

Middle School Mathematics (Praxis II Exam)
- Probability, Statistics, and Discrete
Mathematics
Tables

A convenient way to present data clearly. The data is presented in two columns, with the item being
measured in one column and the number (or percentage) of data points for that item in another column.

Quantitative Data

Data having to do with quantities as the items being measured.

Categorical Data

Data having to do with the categories as the items being measured.

Bar Graphs

Convey information using rectangular bars that do not touch each other.

Histograms

Convey information using rectangular bars that do touch each other.

Double Bar Graphs

Show the same type of data for two groups on the same graph.

Stem-and-Leaf Plots

A better visual representation of data. The original data points aren't lost. It is presented in two columns
where the stem is the left column and the leaves is the right column.

Pie Chart

Displays data as wedges in a circular shape. Also called circle graphs.

Line Graphs

Plot one variable against another. Similar to linear equations graphed in a coordinate plane.

Interpolation

Reading a value on the graph between the given points.

Extrapolation

Extending the graph beyond what is plotted.

Line of Best Fit