When a line graph is employed to represent the number of subjects who received each possible score on a variable, the graph is called a _____.

A) pie chart
B) frequency polygon
C) histogram
D) bar graph

Frequency Polygon

A graphic display of a frequency distribution in which the frequency of each score is plotted on the vertical axis, with the plotted points connected by straight lines.

Line Graph

A graphical representation of data where individual data points are connected by straight lines to show trends over time or categories.

Variable

An element, feature, or factor that is liable to vary or change; essential for research to assess its effects in an experiment.