Section 1.2

Dotplot

A graph in which each data value is shown as a dot above its location on a number line.

Outlier

An individual value that falls outside the overall pattern.

Mode

Most frequently arising value within a data set.

Range (aka Spread)

The range of the distribution of values is acquired by subtracting the smallest value from the largest value within a data set.
(Maximum Value) - (Minimum Value)
When citing range, mention the number and from where to where it extends

Symmetric

A distribution is roughly symmetric if the left and right sides of the graph are approximately mirror images of each other.

Skewed

A distribution is skewed to a direction if the outliers are located in that direction.

Unimodal

A plot is unimodal when it has a single peak.

Bimodal

A plot is bimodal when it has two peaks.

Multimodal

A plot is multimodal when it has more than two peaks.

Stemplot (Stem-and-Leaf Plot)

A graph that splits values into stems (all but the final digit) and leaves (the final digit). These stems are then ordered vertically and their corresponding leaves are then placed to their right.
+ "0" is considered a viable stem if you have a number bet

Splitting Stems

When two of each type of stem is included in a stem-and-leaf plot even though the additional stem may not contain any data. Leaves 0-4 are placed on the first stem and leaves 5-9 are place on the second.

Back-to-Back Stemplot

A stem-and-leaf plot that has been organized into two categorical variables.

Histogram

The most common graph of the distribution of one quantitative variable. The x-axis is a number line that is split into consecutive internals. Every bar (bin) is the width of a set interval on the number line. Each bin has a height corresponding to the cou