# Shared Flashcard Set

## Details

Busn 210 Stat Ch.2 Terms
Statistical Techniques in Busn & Econ 14e
9
10/03/2009

Term
 Charts
Definition
 Special graphical formats used to portray a frequency distribution, including histograms, frequency polygons, and cumulative frequency polygons. Other graphical devices used to portray data are line charts, bar charts, and pie charts.
Term
 Class
Definition
 The interval in which the data are tallied. For example, \$4 up to \$7 up to \$11 is another class.
Term
 Class frequency
Definition
 The number of observations in each class, 16 observations in the \$4 up to \$6 class, 16 is the class frequency.
Term
 Exhaustive
Definition
 Each observation must fall into one of the categories.
Term
 Frequency distribution
Definition
 A grouping of data into classes showing the number of observations in each of the mutually exclusive classes.
Term
 Histogram
Definition
 A graphical display of a frequency or relative frequency distribution. The horizontal axis shows the classes. The vertical height of adjacent bars shows the frequency or relative frequency of each class.
Term
 Midpoint
Definition
 The value that divides the class into two equal parts. For the classes \$10 up to \$20 and \$20 up to \$30, the midpoints are \$15 and \$25, respectively.
Term
 Mutually exclusive
Definition
 A property of a set of categories such that an individual, object, or measurement is included in only one category.
Term
 Relative frequency distribution
Definition
 A frequency distribution that shows the fraction or proportion of the total observations in each class.
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