WGU Statistics Test (2025/2026 Latest Exam
Prep) | Complete Study Guide & Verified
Practice Q&A
whole numbers - correct answerNumbers that do not contain decimals or fractions
Integers - correct answerWhole numbers and their opposites
rational numbers - correct answerAll positive and negative integers, fractions and
decimal numbers.
Real numbers - correct answerAny number that can be placed on a number line.
Including numbers that do not end, and number like pi
A Set - correct answerA collection of numbers
Discrete - correct answerValues that are distinct, separate and unconnected
Continuous - correct answerValues in a set that are connected, without gaps
Quantitative Data - correct answerConsists of data values that are numerical,
representing qualities that can be counted or measured
Categorical data - correct answerAlso called qualitative data. Consists of data that are
groups, such as names or labels, and are not necessarily numerical.
Graphical displays - correct answerVisual displays of data sets
data set - correct answerAny collection of numeric values, such as measurements,
observations, or survey responses
Distribution - correct answerAn arrangement of values that illustrates their frequency or
occurrence
Pie chart - correct answerA graphical display that shows data in categories as
percentages of a circle
Bar chart - correct answerA graph that displays data that is distributed over groups or
categories
,Relative frequency - correct answerA way to approximate a percentage by dividing the
number of times an event occurred in an experiment by the total number of trials.
frequency distribution - correct answerA record of the number of times data occurs
within a certain category
Dot plot - correct answerA graphical representation of data that plots the frequency of
data along a horizontal line
Outliers - correct answerAn observation point (number) that is significantly distant from
the other observations in the dataset
Stem plots - correct answerA visual representation of data in which individuals data
points are plotted to the right of a horizontal line, or chart, and the left (the "stem")
shows the interval categories
Box plot - correct answerA graphical rendering of the range and the first and third
quartiles of a data set with the data set's median in between
Measure of central tendency - correct answerA summary measure that is used to
describe an entire set of data with one value that represents the middle or center of the
data sets distribution. There are 3 main measures: mean, median or mode
Histogram - correct answerA graph that displays data through vertical bars that show
the counts or numbers in each range
Shape - correct answerThe outline of a set of data displayed on the coordinate axes
Scale - correct answerThe relationship between units and their visual representation on
a graph
Check sheet - correct answerA structured form or table that allows data to be collected
by marking how often an event has occurred in a certain interval
Guides for histogram - correct answer< 50 divide data into 5-7 intervals
50-100 divide into 6-10 intervals
100-250 divide into 7-12 intervals
>250 divide into 10-20 intervals
Symmetry - correct answerThe quality of the data having the same shape on both sides
of the mean
Normal distribution - correct answerA comment type of distribution of data points that for
a a bell shaped, symmetrical curve around the mean
, Skewed distribution - correct answerA distribution that is not symmetrical but has a
greater quantity of data on one side of the mean
Skewness - correct answerA measure of the degree to which a probability distribution
"leans" toward one side of the average, where the median and mean are not the same
negatively skewed - correct answerA distribution where the rail on the left of the curve is
longer, indication theta more values are the less than the central or most common value
Positively skewed - correct answerA distribution where the tail on the right of the curve
is longer, indicating that more values are more than the central or most common value
Bimodal - correct answerA description of a data set that has two modes
Multimodal - correct answerA description of a data set with 2 or more modes
statistics - correct answerThe science that deals with the interpretation of numerical
facts or data through theories of probability
Reliable data - correct answerData is both consistent and repeatable
Valid data - correct answerData that results from a test that accurately measures what it
was intended to measure
addition - correct answerFinding the total of 2 or more values
Subtraction - correct answerTaking one or more value away from another
expression - correct answerA string of terms that are connected by division, addition
and subtraction operations
Operator - correct answerA word or symbol that indicates an operation between values
Sum - correct answerThe result of multiple number being added together
Commutative - correct answerThe property that the order of the numbers under the
operation does not change the result. Addition and multiplication are commutative: A
plus B equals B+ a and a B equals BA
Identity property - correct answerThe property that zero can be added to any number
without changing the value of the number. Likewise, one can be multiplied by any
number without changing the value of that number.
Additive inverse - correct answerTwo numbers equidistant from zero on a number line
whose sum is zero. Three and -3 are additive inverse is
Prep) | Complete Study Guide & Verified
Practice Q&A
whole numbers - correct answerNumbers that do not contain decimals or fractions
Integers - correct answerWhole numbers and their opposites
rational numbers - correct answerAll positive and negative integers, fractions and
decimal numbers.
Real numbers - correct answerAny number that can be placed on a number line.
Including numbers that do not end, and number like pi
A Set - correct answerA collection of numbers
Discrete - correct answerValues that are distinct, separate and unconnected
Continuous - correct answerValues in a set that are connected, without gaps
Quantitative Data - correct answerConsists of data values that are numerical,
representing qualities that can be counted or measured
Categorical data - correct answerAlso called qualitative data. Consists of data that are
groups, such as names or labels, and are not necessarily numerical.
Graphical displays - correct answerVisual displays of data sets
data set - correct answerAny collection of numeric values, such as measurements,
observations, or survey responses
Distribution - correct answerAn arrangement of values that illustrates their frequency or
occurrence
Pie chart - correct answerA graphical display that shows data in categories as
percentages of a circle
Bar chart - correct answerA graph that displays data that is distributed over groups or
categories
,Relative frequency - correct answerA way to approximate a percentage by dividing the
number of times an event occurred in an experiment by the total number of trials.
frequency distribution - correct answerA record of the number of times data occurs
within a certain category
Dot plot - correct answerA graphical representation of data that plots the frequency of
data along a horizontal line
Outliers - correct answerAn observation point (number) that is significantly distant from
the other observations in the dataset
Stem plots - correct answerA visual representation of data in which individuals data
points are plotted to the right of a horizontal line, or chart, and the left (the "stem")
shows the interval categories
Box plot - correct answerA graphical rendering of the range and the first and third
quartiles of a data set with the data set's median in between
Measure of central tendency - correct answerA summary measure that is used to
describe an entire set of data with one value that represents the middle or center of the
data sets distribution. There are 3 main measures: mean, median or mode
Histogram - correct answerA graph that displays data through vertical bars that show
the counts or numbers in each range
Shape - correct answerThe outline of a set of data displayed on the coordinate axes
Scale - correct answerThe relationship between units and their visual representation on
a graph
Check sheet - correct answerA structured form or table that allows data to be collected
by marking how often an event has occurred in a certain interval
Guides for histogram - correct answer< 50 divide data into 5-7 intervals
50-100 divide into 6-10 intervals
100-250 divide into 7-12 intervals
>250 divide into 10-20 intervals
Symmetry - correct answerThe quality of the data having the same shape on both sides
of the mean
Normal distribution - correct answerA comment type of distribution of data points that for
a a bell shaped, symmetrical curve around the mean
, Skewed distribution - correct answerA distribution that is not symmetrical but has a
greater quantity of data on one side of the mean
Skewness - correct answerA measure of the degree to which a probability distribution
"leans" toward one side of the average, where the median and mean are not the same
negatively skewed - correct answerA distribution where the rail on the left of the curve is
longer, indication theta more values are the less than the central or most common value
Positively skewed - correct answerA distribution where the tail on the right of the curve
is longer, indicating that more values are more than the central or most common value
Bimodal - correct answerA description of a data set that has two modes
Multimodal - correct answerA description of a data set with 2 or more modes
statistics - correct answerThe science that deals with the interpretation of numerical
facts or data through theories of probability
Reliable data - correct answerData is both consistent and repeatable
Valid data - correct answerData that results from a test that accurately measures what it
was intended to measure
addition - correct answerFinding the total of 2 or more values
Subtraction - correct answerTaking one or more value away from another
expression - correct answerA string of terms that are connected by division, addition
and subtraction operations
Operator - correct answerA word or symbol that indicates an operation between values
Sum - correct answerThe result of multiple number being added together
Commutative - correct answerThe property that the order of the numbers under the
operation does not change the result. Addition and multiplication are commutative: A
plus B equals B+ a and a B equals BA
Identity property - correct answerThe property that zero can be added to any number
without changing the value of the number. Likewise, one can be multiplied by any
number without changing the value of that number.
Additive inverse - correct answerTwo numbers equidistant from zero on a number line
whose sum is zero. Three and -3 are additive inverse is
