WGU C207 Data-Driven Decision-Making Statistics as a Managerial Tool Quiz & Correct Answers | Latest 2025/2026 Update

WGU C207 Data-Driven Decision-Making Statistics as a Managerial Tool Quiz & Correct Answers | Latest 2025/2026 Update Section 2: Quiz points (ungraded) Answer the following questions. 1. An online retailer selling workout apparel has a large increase in sales during December and declares that their weeklynewspaper ad resulted in higher sales. Which misuse of statistics may the retailer have used in making this decision? Small sample size Association and causation Missing data Conscious bias 2. An educator collects eighth grade math scores from a local school and uses this data to recommend curriculum changes forgrades 8–12. Which misuse of statistics may the educator have used in making this recommendation? Lack of blinding Conscious bias Missing data Not a representative sample 3. An economist wishes to study the distribution of household income in a Midwestern city. He randomly selects a sample from12 households. He notices two large incomes in his sample. Which measure best represents the middle of the incomes? Mean Median Variance Mode 4. A cable company offers its customers both cable television and internet. Which statistical rule should be used to determine the probability that customers will have both cable television and internet? Multiplication Addition Combination Bayes Theorem 5. A department store is considering a new credit policy to reduce defaults on payments. Its records show that 95% of defaultshave at least two late payments. Also, 3% of all customers default and 30% of those customers who have not defaulted have atData-Driven Decision Making least two late payments. Which statistical rule should be used to find the probability that a customer will default given that at least two payments were late? Central Limit Theorem Multiplication Rule Bayes Theorem Combination Rule 6. Based on quality checks at a plastic bags manufacturer, the breaking strength of their bags has a mean of 50.5 and astandard 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? Z-score P-value T-test R-square 7. The mean of 100 bank customers’ waiting times for teller service is 5.8 minutes with a standard deviation of 1.5. Which time range would represent a 95.4% probability customer waiting time? 4.3 to 7.3 1.3 to 13.0 2.8 to 8.8 3.8 to 7.5 8. The revenue of NBA teams ranges from $226 million for the New York Knicks to $92 million for the Milwaukee Bucks. Which statistic would measure how far each and all NBA team’s revenue is from the NBA revenue mean? Variance Median Z-score Mode 9. A local plumbing company is analyzing to see how the number of weeks taken for their payment receipts is distributed. Which graphical analysis technique should they use? Histogram Pie chart 3