WGU C207 Questions and Answers Rated A

Document Content and Description Below

WGU C207 Questions and Answers Rated A 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 ✔✔Analy... tics A manufacturer wants to maximize their factory output while specifically minimizing labor costs. What type of analytics might they employ to achieve this goal? ✔✔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? ✔✔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? ✔✔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? ✔✔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? ✔✔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? ✔✔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? ✔✔Treatment procedures Experimental response Runners cover 26.2 miles in the Olympics marathon. What level of measurement is this? ✔✔Ratio What level of measurement is the type of cars produced in Ford factory? ✔✔Nominal What level of measurement is this the 10 best cities in the U.S. to retire in? ✔✔Ordinal What level of measurement are women's dress sizes (2,4,6, etc.)? ✔✔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? ✔✔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? ✔✔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 ✔✔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? ✔✔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? ✔✔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? ✔✔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 pay [Show More]

Last updated: 1 year ago

Preview 1 out of 11 pages