WGU C207 DATA DRIVEN DECISION MAKING
FINAL EXAM 2026 UPDATED PRACTICE
QUESTIONS AND SOLUTIONS
◉ Passives. Answer: A category of customer used in the calculation
of the Net Promoter Score that indicates an enthusiastic and
satisfied but apathetic customer.
◉ Percentile. Answer: the percent of the population that falls below
a certain value
◉ Permutation. Answer: The number of different ordered
possibilities for a certain situation
◉ Prevalence. Answer: measures the number cases of a particular
disease that exist in a population
# of cases/total pop
◉ Probability. Answer: The chance of an event occurring
◉ Probability density function. Answer: Often used to represent
probabilities of continuous data, a probability density function (pdf)
,gives the probability that a continuous random variable is equal to
the area below it
◉ Probability distributions. Answer: A set of probabilities that are
attached to the different possible outcomes in a survey, experiment,
or procedure
◉ Probability mass function. Answer: Often used to represent
probabilities of discrete data, a probability mass function (pmf)
gives the probability that a discrete random variable is exactly equal
to some value
◉ Proportion. Answer: a ratio in which a part of a group is compared
to the whole group
◉ R-squared. Answer: The measure of the "goodness of fit" of the
regression line and the percentage of variation in the dependent
variable that is explained by the independent variable
◉ Random Variation. Answer: The variability of a process which
might be caused by irregular fluctuations due to chance that cannot
be anticipated, detected, or eliminated
◉ Range. Answer: The difference between the minimum and
maximum value in a given measurable set
, ◉ Rate. Answer: measure of an event occurring over a period of time
◉ Ratio. Answer: measures one quantity in relation to another
quantity
◉ Ratio Data. Answer: Similar to interval data in that the data that is
ordered within a range and with each data point being an equal
interval apart, also has a natural zero point which indicates none of
the given quality.
◉ Regression Analysis. Answer: A statistical analysis tool that
quantifies the relationship between a dependent variable and one or
more independent variables. ie seasonality, trend, random variation
◉ Relational Database. Answer: A database structured to recognize
relations among stored items of information.
◉ Reliable Data. Answer: Data that is consistent and repeatable
◉ Return on Investment (ROI). Answer: The ratio of income earned
on the investment to the investment made to earn that income.
FINAL EXAM 2026 UPDATED PRACTICE
QUESTIONS AND SOLUTIONS
◉ Passives. Answer: A category of customer used in the calculation
of the Net Promoter Score that indicates an enthusiastic and
satisfied but apathetic customer.
◉ Percentile. Answer: the percent of the population that falls below
a certain value
◉ Permutation. Answer: The number of different ordered
possibilities for a certain situation
◉ Prevalence. Answer: measures the number cases of a particular
disease that exist in a population
# of cases/total pop
◉ Probability. Answer: The chance of an event occurring
◉ Probability density function. Answer: Often used to represent
probabilities of continuous data, a probability density function (pdf)
,gives the probability that a continuous random variable is equal to
the area below it
◉ Probability distributions. Answer: A set of probabilities that are
attached to the different possible outcomes in a survey, experiment,
or procedure
◉ Probability mass function. Answer: Often used to represent
probabilities of discrete data, a probability mass function (pmf)
gives the probability that a discrete random variable is exactly equal
to some value
◉ Proportion. Answer: a ratio in which a part of a group is compared
to the whole group
◉ R-squared. Answer: The measure of the "goodness of fit" of the
regression line and the percentage of variation in the dependent
variable that is explained by the independent variable
◉ Random Variation. Answer: The variability of a process which
might be caused by irregular fluctuations due to chance that cannot
be anticipated, detected, or eliminated
◉ Range. Answer: The difference between the minimum and
maximum value in a given measurable set
, ◉ Rate. Answer: measure of an event occurring over a period of time
◉ Ratio. Answer: measures one quantity in relation to another
quantity
◉ Ratio Data. Answer: Similar to interval data in that the data that is
ordered within a range and with each data point being an equal
interval apart, also has a natural zero point which indicates none of
the given quality.
◉ Regression Analysis. Answer: A statistical analysis tool that
quantifies the relationship between a dependent variable and one or
more independent variables. ie seasonality, trend, random variation
◉ Relational Database. Answer: A database structured to recognize
relations among stored items of information.
◉ Reliable Data. Answer: Data that is consistent and repeatable
◉ Return on Investment (ROI). Answer: The ratio of income earned
on the investment to the investment made to earn that income.
