Introduction to Statistics for Research- WGU. Exam Test 2026

Introduction to Statistics for
Research- WGU

Histogram - answer Graphic version of frequency distribution. Bar chart with no spaces
between to show distribution.
a graphical display of a frequency distribution for quantitative data based on rectangular
bars

frequency polygon - answer A line figure used to present data from a frequency
distribution. Useful for comparing distributions
graphical display of a frequency distribution based on connected lines

Box Plots / Box and Whisker - answer Used to show range, median, quartiles, and
outliers for a set
visual display based on the 25th, 50th, and 75th percentiles of a dataset

Scatterplot - answera visual display of two quantitative variables using vertical and
horizontal axes

Nominal graphs - answerbar and pie charts

Ordinal graphs - answerbar, pie, and line and graph

Interval graphs - answerBar (part of y-axis)

Box plot

Histogram (frequency on y-axis)

Frequency polygon

Ratio graphs - answerBar (part of y-axis)

Box plot

Histogram (frequency on y-axis)

Frequency polygon

Outlier - answeran unusual data value that does not fit the rest of the data