WGU C207 Exam Questions And Answers
2025 Update.
For companies to attract and retain their best customers they need a complete portrait of who
they are. To develop this portrait companies turn to - Answer✔Analytics
A manufacturer wants to maximize their factory output while specifically minimizing labor
costs. What type of analytics might they employ to achieve this goal? - Answer✔Prescriptive
Analytics
What type of data error that occurs in measurement is constant within a data set and is
sometimes caused by faulty equipment or bias? - Answer✔Systematic
An Educator develops a new standardized test to measure math skills of ninth graders. She has
students in her home state of Ohio take the test. If the test is to be used on a national level,
what type of error might be found in her data? - Answer✔Measurement Bias
A city government is trying to determine the national origins of its recent immigrant population.
If a survey of the immigrant population is conducted in English what type of error might be
present in the data? - Answer✔Omission
The use of Big Data is increasingly important to businesses in competitive markets. Which of the
following characteristics is not true of big data? - Answer✔Can be analyzed with traditional
spreadsheets
The Davenport-Kim three-stage model consists of framing the problem, solving the problem,
and communicating results. Which two of the following are part of framing the problem stage?
- Answer✔Determine the scope of the problem
Review of previous findings
A healthcare provider is researching blood glucose levels before and after exercising. What two
elements should be part of any experimental study such as this? - Answer✔Treatment
procedures
Experimental response
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Runners cover 26.2 miles in the Olympics marathon. What level of measurement is this? -
Answer✔Ratio
What level of measurement is the type of cars produced in Ford factory? - Answer✔Nominal
What level of measurement is this the 10 best cities in the U.S. to retire in? - Answer✔Ordinal
What level of measurement are women's dress sizes (2,4,6, etc.)? - Answer✔Interval
A local school board is studying the impact of a proposed change in testing on math scores. Bias
can be introduced into the study by both students and teachers. Which research technique
would eliminate this type of bias? - Answer✔Double blind study
A Company's product development team test 3 new car waxes by waxing 5 cars with each wax
and then running them through a car wash. They then record number of washes it takes before
the wax begins to deteriorate. What is the term for the five cars? - Answer✔The experimental
unit
An online retailer selling workout apparel has a large increase in sales during December and
declares that their weekly newspaper ad resulted in higher sales. What misuse of statistics may
the retailer have used in making this decision?
0/1 - Answer✔Association and Causation
An educator collects eighth grade math scores from a local school and used this data to
recommend curriculum changes for grades 8 - 12. What misuse of statistics may the educator
have used in making this recommendation? - Answer✔Not a representative sample
An economist wishes to study the distribution of household income in a Midwestern city. He
randomly selects a sample from 12 households. He notices two large incomes in his sample.
Which measure best represents the middle of the incomes? - Answer✔Median
A cable company offers its customers both cable television and internet. What statistical rule
should be used to determine the probability that customers will have both cable television and
internet? - Answer✔Multiplication
A department store is considering a new credit policy to reduce defaults on payments. Its
records show that 95% of defaults have at least 2 late payments. Also, 3% of all customers
default and 30% of those customers who have not defaulted have a least 2 late payments.
What statistical rule should be used to find the probability that a customer will default given
that at least 2 payments were late? - Answer✔Bayes Theorem
Based on quality checks at plastic bags manufacturer, the breaking strength of their bags has a
mean of 50.5 and a standard deviation of 1.6. A customer's test of the bags finds bag strength
of 54.2 or less. Which statistical measure should be used to help determine the probability of
the customer's test occurring? - Answer✔z-score
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