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7.8: Histograms

Difficulty Level: Basic Created by: CK-12
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Vocabulary

frequency distribution

A table that lists all of the classes and the number of data values that belong to each of the classes. A distribution in which most of the data values are located to the right of the mean is called a left-skewed distribution, while a distribution in which most of the data values are located to the left of the mean is called a right-skewed distribution.

bar graph

A bar graph is a plot made of bars whose heights (vertical bars) or lengths (horizontal bars) represent the frequencies of each category, with space between each bar.

frequency density

The vertical axis of a histogram is labelled frequency density.

Frequency table

A frequency table is a table that summarizes a data set by stating the number of times each value occurs within the data set.

Histogram

A histogram is a display that indicates the frequency of specified ranges of continuous data values on a graph in the form of immediately adjacent bars.

Interval

An interval is a range of data in a data set.

Range

The range of a data set is the difference between the smallest value and the greatest value in the data set.

right-skewed distribution

A right-skewed distribution has a peak to the left of the distribution and data values that taper off to the right.

unimodal

If a data set has only 1 value that occurs most often, the set is called  unimodal.

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MAT.STA.226.L.1