WGU C207 Module Quizzes Multi Choice Version Data- Driven Decision Making

WGU C207 Module Quizzes Multi Choice Version Data- Driven Decision Making

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• Statistics
• Analytics
• Management Science
• Histograms

b A manufacturer wants to maximize their factory output while specifically minimizing labor costs. What type of analytics might they employ to achieve this goal?

• Descriptive Analytics
• Predictive Analytics
• Prescriptive Analytics
• Diagnostic Analytics

c What type of data error that occurs in measurement is constant within a data set and is sometimes caused by faulty equipment or bias?

• Random
• Omission
• Outlier
• Systematic

d

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?

• Omission Error
• Systematic Error
• Measurement Bias
• Information Bias

c 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?

• Random
• Omission
• Outlier
• Accuracy

b The use of Big Data is increasingly important to businesses in competitive markets. Which of the following characteristics is not true of big data?

• Requires the use of analytics
• Contains structured data
• Contains unstructured data
• Can be analyzed with traditional spreadsheets

d 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?

• Determine the scope of the problem
• Data collection
• Review of previous findings
• Presenting a recommendation

a, c 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?

• Treatment procedures
• Patient observation
• Statistical validity
• Experimental response

a, d Runners cover 26.2 miles in the Olympics marathon. What level of measurement is this?

• Nominal
• Ordinal
• Interval
• Ratio

d

What level of measurement is the type of cars produced in Ford factory?

• Nominal
• Ordinal
• Interval
• Ratio

a What level of measurement is this the 10 best cities in the U.S. to retire in?

• Nominal
• Ordinal
• Interval
• Ratio

b What level of measurement are women's dress sizes (2,4,6, etc.)?

• Nominal
• Ordinal
• Interval
• Ratio

c 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?

• Observation study
• Blind study
• Cohort study
• Double blind study

d 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?

• The response
• The construct validity
• The experimental unit
• The treatment

c 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?

• Conscious Bias
• Missing Data
• Association and Causation
• Small Sample Size

c

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?

• Not a representative sample
• Conscious Bias
• Lack of Binding
• Missing Data

a 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?

• Mode
• Median
• Variance
• Mean

b 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?

• Multiplication
• Bayes Theorem
• Combination
• Addition

a 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?

• Central Limit Theorem
• Multiplication Rule
• Bayes Theorem
• Combination Rule

c 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?

• t-test
• z-score
• p-value
• R-Square

c