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Biometry: Frequency Distribution and Graphic Presentation
Chapter 3
6
Biology
Undergraduate 3
03/12/2013

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Term
Frequency Distributions
Definition
Displays a summary of the number of observations that take on specific values or ranges of values. (often represented in the form of a bar graph)
Term
Frequency
Definition
A count of the number of observations in a category.
Term
Histogram
Definition
A graph of a frequency distribution, if the variable graphed is continuous.
Term
Bar Graph
Definition
A graph of a frequency distribution, if the variable is discontinuous ( or discrete).
Term
Frequency Polygon
Definition
A line graph in which points are plotted on a graph with class marks on the x-axi and frequency on the y-axis.
Term
Scatterplot
Definition
A method in which the relationship between two continuos variables is typically displayed with an x-y graph.
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