WGU C207 STUDY GUIDE MODULE 3
& 4 with correct answers 2026/2027
version
homoscedasticity - correct answer>>>assumes that the variance of a dependent
variable is consistent across the range of values
median - correct answer>>>is the midpoint value of a group of measurements
statistical population - correct answer>>>is a group of observations that have something
in common
mean - correct answer>>>is the average of a group of measurements
heteroscedasticity - correct answer>>>is the assumption that the variance of a
dependent variable changes across the range of values
dependent variable - correct answer>>>is calculated from the value of the other
variables in an equation
irregularity - correct answer>>>occurs when there is a one-time unusual measurement
in a process
seasonality - correct answer>>>describes variability in a process that occurs at the
same time of year each year
autocorrelation - correct answer>>>describes events whose probability of occurring
depends upon the events that occurred previously
random variation - correct answer>>>describes the variability that occurs in events for
which we have no explanation
independent variable - correct answer>>>is a variable in an equation to which we can
assign a specific value
trend - correct answer>>>is a general direction in which something is developing or
changing
analysis of variance (ANOVA) - correct answer>>>verifies if multiple populations of data
are the same or at least one is different than the others.
, cyclicality - correct answer>>>describes results that go up and down periodically, but
don't necessarily follow the calendar
outlier - correct answer>>>is a measurement that is very different than other
measurements of similar events
mode - correct answer>>>is the most common measurement of a group of events
T - correct answer>>>Linear Programming finds a maximum or minimum solutions in a
situation that has various constraints
T - correct answer>>>If we are analyzing which among three equipment options for a
new office would be the best choice, we might use Crossover Analysis
F - correct answer>>>In a Crossover Analysis considering three options, every
crossover point is essential to our analysis
F - correct answer>>>Break-even Analysis requires only fixed and variable cost
information
F - correct answer>>>The Mean can be found on the left, middle or right portions of a
Normal Curve
T - correct answer>>>The Average and the Mean are synonyms
T - correct answer>>>ANOVA (Analysis of Variance) helps us determine statistical
differences between groups of data
F - correct answer>>>The Z-test is the key statistic for an ANOVA analysis
T - correct answer>>>Regression Analysis creates a "Best Fit" line for a set of data
F - correct answer>>>Time Series Analysis requires finding the best experts who will
predict what is coming in the future
T - correct answer>>>Cluster Analysis is used to find groupings in a set of data
T - correct answer>>>Decision Analysis uses a weighted average of all possible
outcomes to determine the best course of action
F - correct answer>>>The Independent Variable is the prediction that is calculated from
the data of a specific situation
F - correct answer>>>The Correlation of a set of data reveals what is causing the
pattern we are seeing
& 4 with correct answers 2026/2027
version
homoscedasticity - correct answer>>>assumes that the variance of a dependent
variable is consistent across the range of values
median - correct answer>>>is the midpoint value of a group of measurements
statistical population - correct answer>>>is a group of observations that have something
in common
mean - correct answer>>>is the average of a group of measurements
heteroscedasticity - correct answer>>>is the assumption that the variance of a
dependent variable changes across the range of values
dependent variable - correct answer>>>is calculated from the value of the other
variables in an equation
irregularity - correct answer>>>occurs when there is a one-time unusual measurement
in a process
seasonality - correct answer>>>describes variability in a process that occurs at the
same time of year each year
autocorrelation - correct answer>>>describes events whose probability of occurring
depends upon the events that occurred previously
random variation - correct answer>>>describes the variability that occurs in events for
which we have no explanation
independent variable - correct answer>>>is a variable in an equation to which we can
assign a specific value
trend - correct answer>>>is a general direction in which something is developing or
changing
analysis of variance (ANOVA) - correct answer>>>verifies if multiple populations of data
are the same or at least one is different than the others.
, cyclicality - correct answer>>>describes results that go up and down periodically, but
don't necessarily follow the calendar
outlier - correct answer>>>is a measurement that is very different than other
measurements of similar events
mode - correct answer>>>is the most common measurement of a group of events
T - correct answer>>>Linear Programming finds a maximum or minimum solutions in a
situation that has various constraints
T - correct answer>>>If we are analyzing which among three equipment options for a
new office would be the best choice, we might use Crossover Analysis
F - correct answer>>>In a Crossover Analysis considering three options, every
crossover point is essential to our analysis
F - correct answer>>>Break-even Analysis requires only fixed and variable cost
information
F - correct answer>>>The Mean can be found on the left, middle or right portions of a
Normal Curve
T - correct answer>>>The Average and the Mean are synonyms
T - correct answer>>>ANOVA (Analysis of Variance) helps us determine statistical
differences between groups of data
F - correct answer>>>The Z-test is the key statistic for an ANOVA analysis
T - correct answer>>>Regression Analysis creates a "Best Fit" line for a set of data
F - correct answer>>>Time Series Analysis requires finding the best experts who will
predict what is coming in the future
T - correct answer>>>Cluster Analysis is used to find groupings in a set of data
T - correct answer>>>Decision Analysis uses a weighted average of all possible
outcomes to determine the best course of action
F - correct answer>>>The Independent Variable is the prediction that is calculated from
the data of a specific situation
F - correct answer>>>The Correlation of a set of data reveals what is causing the
pattern we are seeing
