WGU C207 DATA-DRIVEN DECISION MAKING FINAL EXAM
REVIEWED QUESTIONS AND ANSWERS 2022/2023
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? (correct answers)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? (correct answers)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? (correct answers)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? (correct answers)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? (correct answers)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? (correct answers)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? (correct
answers)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? (correct answers)treatment
procedures, experimental response
, Runners cover 26.2 miles in the Olympics marathon. What level of measurement is this? (correct
answers)ratio
What level of measurement is the type of cars produced in Ford factory? (correct answers)nominal
What level of measurement is this the 10 best cities in the U.S. to retire in? (correct answers)ordinal
What level of measurement are women's dress sizes (2,4,6, etc.)? (correct answers)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? (correct answers)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? (correct answers)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? (correct answers)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? (correct answers)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? (correct answers)median
REVIEWED QUESTIONS AND ANSWERS 2022/2023
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? (correct answers)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? (correct answers)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? (correct answers)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? (correct answers)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? (correct answers)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? (correct answers)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? (correct
answers)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? (correct answers)treatment
procedures, experimental response
, Runners cover 26.2 miles in the Olympics marathon. What level of measurement is this? (correct
answers)ratio
What level of measurement is the type of cars produced in Ford factory? (correct answers)nominal
What level of measurement is this the 10 best cities in the U.S. to retire in? (correct answers)ordinal
What level of measurement are women's dress sizes (2,4,6, etc.)? (correct answers)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? (correct answers)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? (correct answers)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? (correct answers)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? (correct answers)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? (correct answers)median
