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1.2: Understanding and Interpreting Frequency Tables and Histograms

Difficulty Level: At Grade Created by: CK-12
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Vocabulary

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.

Data

Data is information that has been collected to represent real life situations, usually in number form.

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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Date Created:
Dec 19, 2012
Last Modified:
Jun 19, 2015
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MAT.STA.226.L.4