WGU C207 OA 2018

Flowchart

A hotel chain is interested in improving its customer service by reducing the amount of time it takes customers to check in. Which analysis technique should they use?

By establishing a balanced scorecard

How can organizations implement an effective performance management evaluation system?

Define resources Study the long-term effects of the output

Which two items represent steps of results-based management? Choose two answers

Construct a Pareto chart

A check sheet indicates that of 100 returned items, 50 were damaged upon delivery, 30 were the wrong size, 10 were of poor quality, 5 were a mistaken order, and 5 were returned due to the customer no longer wanting the item. What is the appropriate way to represent these data?

Pareto chart

A college is reviewing statistics concerning student retention. The college would like to determine the most important factors that cause students to leave and asks the researcher to display this information using one of the Seven Basic Tools of Quality. Which tool should be used in this case?

R-squared

A company decides to auction excess inventory on an auction website. They have performed a regression analysis to identify how the length of the auction impacts the final price. Which statistic indicates the strength of the relationship between the length of auctions and final price?

Number of purchases per e-mail Cost per e-mail

A company is trying to increase its online sales revenue by improving its e-mail advertising campaign for repeat customers as well as new customers. Which two variables would be used in determining a campaign to maximize revenue gain? Choose 2 answers

By benchmarking like strategies of successful counties

A county government must reduce spending. It wishes to eliminate incremental budgeting and align budget allocations with each of its units' strategic business objectives. How can the county apply data analytic approaches to attain this goal?

By estimating the payback period

A county government wishes to convert government vehicles from gasoline to natural gas. How can the county evaluate the effectiveness of the conversion?

Scatter plot

A doctoral student is surveying chief executive officers (CEOs) to understand their relationships with their governing boards. The student determines the years of business experience for each CEO as well as their rating, on a 10-point scale, of satisfaction with the governing board. Which statistical approach should be used to display the data for analysis?

To measure the spread of the data

A doctoral student is surveying chief executive officers (CEOs) to understand their relationships with their governing boards. The student receives responses to a survey with ten questions that rates the respective relationships. Why would the student measure the standard deviation of responses?

Bayes' Theorem

A hardware store has found that there is a 0.25 probability that a customer buys an electrical product, a 0.45 probability that a customer buys a plumbing product, and a 0.10 probability that a customer buys an electrical part if they purchase a plumbing part. Given this information, which statistical rule can be used to determine the probability that a customer buys a plumbing product given that this customer has purchased an electrical product?

Cohort study

A healthcare study follows a particular sample over time to identify how the health habits of teenagers impact their likelihood of acquiring various diseases later in their life in the hope that the healthcare organization will be able to create early prevention programs. Which type of research design does this study describe?

picture of a hill

A hospital gathers the blood pressure readings of a sample of patients. They find that mean, median and mode of this data set are all nearly equal and that 50% of the blood pressure readings are less than the mean and 50% are greater than the mean. Which histogram would correctly graph this data set? (hill)

It provides a holistic view of the entire operation.

A joint venture is established between two firms to use their core competencies to increase their market share. How would a SIPOC (suppliers, inputs, process, outputs, and customers) diagram benefit the joint venture?

Median

A manager is analyzing a dataset that includes information on individual incomes. The manager knows that the dataset is fairly representative of the general population and includes several millionaires. Based on this dataset, which measure of central tendency best represents the middle of the distribution?

Standard deviation Mean

A manager of a call center is in charge of creating a staffing plan. The number of calls received per day is normally distributed. Which two statistics would be needed in order to estimate the number of calls that would be received 95% of the time? Choose 2 answers

The dependent variable

A manager uses a linear regression to examine how the store's retail sales are predicted by advertising expenditures. What will retail sales represent in this regression?

Intersection Multiplication principle

A medical care provider determines the probability that a patient needs treatment for a broken bone, the probability that a patient needs treatment for a concussion, and the probability that a patient needs treatment for both a broken bone and a concussion. Which two techniques apply in finding the probability that a patient needs treatment for a broken bone and a concussion? Choose 2 answers

Developing a decision tree

A national manufacturer is building an overseas factory to be closer to one of its largest markets. Which analysis technique would be appropriate when evaluating location options under risk in order to strengthen the firm's competitiveness in the new market?

ANOVA

A nonprofit organization ran an e-mail campaign with three different messages to solicit additional donations. What should the nonprofit organization use to determine if the average donation differs for the different messages?

68.2%

A normally distributed data set has a mean of 10 and a standard deviation of 2. What is the probability that a randomly selected event from the data set will be between 8 and 12?

Net promoter score

A professional services firm is undergoing a business process improvement exercise to improve productivity, staff morale, and client satisfaction. Which technique might the firm use to evaluate the strength of customer service relations?

Results-based management

A professional services firm wants to track and monitor important financial performance measures of the company (e.g., year-over-year change in revenues and profits). Which performance approach would best meet the company's objective?

The advertisement was effective in building brand awareness.

A research study examined the impact of product advertisement exposure on that product's brand awareness. The appropriate statistical test indicates that the null hypothesis should be rejected with 95% confidence. What can be concluded from this study?

Confusion of association and causality

A researcher concludes that bananas create healthy children because the researcher's notes indicate that children who eat a banana every day are healthy. Which misuse of statistics would this study be an example of if these children also eat a balanced diet and exercise daily?

Autocorrelation

A researcher looks at moving average data on store sales and wishes to perform a multiple regression of interest rates and disposable income. What is a particular concern when performing time series multiple regression?

Ordinary least squares regression

A researcher wants to predict test scores based upon hours spent studying. Which type of regression would be more appropriate?

Seasonality

A retail store notices a spike in turkey sales every November. Which time series pattern are turkey sales likely to exhibit?

Special cause variation

A soft-drink manufacturer performs a control chart analysis and the results indicate that the soft-drink bottles are consistently under-filled by a large amount according to specifications. The system was evaluated three months prior and was determined to be stable and filling bottles within accepted limits. What is this consistent under-filling an example of?

Standard deviation

After evaluating manufacturing times for a particular product, a manager determines that the times are spread out across the distribution. The manager has been asked to determine how far, on average, the time is from the mean. Which statistic roughly measures the average distance of a data point from the mean of the distribution?

The response variable

An advertising manager creates a research study by presenting low, medium, or high frequency of the same ad in matched markets. The manager then reports on sales in each market location. What is the term for the different sales in this study?

Sales of $45,432

An analyst used multiple linear regression to explore how Store A's sales ( y) are predicted by Store A's advertising expenditure dollars (variable x1) and the advertising expenditure dollars of Store A's competitor (variable x2). The estimated regression is y = 532 + 80.5 x1 - 35.6 x2. Which scenario would be predicted if x1 is $1,000 and x2 is also $1,000?

ISO

An organization develops a new strategic plan and seeks ways to measure its performance over a specific period of time. Which system enables the organization to measure performance based upon established global standards?

Plan

An organization is concerned about whether quality control standards are being met and develops a strategy to test quality control metrics. Which step does this represent in the Plan-Do-Check-Act cycle?

Prescriptive

Analytics is a broad term that refers to a variety of tools that inform managerial decisions. Which term can be used to describe managerial decisions

12

Given the following data set: 9 12 14 10 8 11 12 What is the mode?

Attribute data

In a statistical process control analysis, sample data are collected from an assembly line and measured to see if they fall within a tolerated measurement range. If an observation does fall within the range, a "yes" is recorded, and if it falls outside the range, a "no" is recorded. Which kind of data do the "yes" and "no" represent?

Does a causal relationship truly exist?

In the month of December, there is a strong positive correlation between airline ticket sales and retail sales. Which question should the researcher consider before concluding that the correlation statistic implies that airline sales drive retail sales?

They are visual representations of key areas of focus. They show trends that represent organizational results over time.

In what two ways are KPI dashboards useful in performance assessment? Choose 2 answers

By quantifying risk

In what way does probability theory inform decision-making for managers?

Compare outcomes of different drug testing results ANOVA Understand effective marketing to spend advertising dollars efficiently Correlation Monitor production process Control charts

Match each action with the appropriate statistical procedure. Answer options may be used more than once or not at all. (3)

Systematic error Omission error

Several missing values in a particular field in a dataset were observed. The likelihood of a record having a missing value is correlated to another variable in the dataset. Which two types of error might be introduced into the dataset if the removed record included missing values? Choose 2 answers

Z-score

The average test score of students taking an exam was 70% with a standard deviation of 8.5%. Which tool should be used to compare a student's score to the group average?

There is a strong positive relationship for a cosmetic surgery program as a function of income, and this program should be developed in high income areas.

The management for Hospital A conducted a survey of its patients' opinions including gathering demographic data to determine which programs should be pursued during the upcoming fiscal year. Upon analyzing the response on the need for a cosmetic surgery program for the hospital, it was found that there was an r score of 0.75, and a p of 0.03 between a patient's income level and support for the creation of a cosmetic surgery department. Which statement provides an effective strategic decision based on an analysis of the given information?

97.5%

The number of customers that an automobile service shop receives on any given day is normally distributed with a mean of 75 and a standard deviation of 25. On a given day, 125 oil changes are performed. What is the probability on a given day of 125 or fewer oil changes performed?

It reduces the amount of incomplete data. It cleans data.

What are some of the aspects of data quality management? Choose 2 answers

Relatively lower cost of computer storage Higher computer processing power

What are two reasons for the increasing use of analytics in organizational decision making? Choose 2 answers

The observed score is the true score plus random error.

What does True Score Theory state about a test without systematic error?

The data point is two standard deviations less than the mean of the data set

What does it mean when an individual data point has a z-score of -2?

Increases in advertising expenditures are associated with increases in retail sales.

What does this scatter diagram of an organization's retail sales and advertising expenditures indicate?

It discovers patterns or trends in large data sets

What is a description of data mining?

It requires significant time and effort to establish a meaningful scorecard.

What is a disadvantage of a balanced scorecard?

They require significant ongoing maintenance.

What is a significant disadvantage of KPIs?

Incidence accounting for all new cases

What is the most important analytic to determine the success or failure of a particular year's flu vaccine?

It analyzes the cost of achieving a quantifiable goal.

What is true of cost-effective analysis?

Systematic error

When conducting a study that measures an individual's weight, all scales are calibrated prior to use in measurement. Which type of error should this procedure significantly reduce?

Lean Operations

Which approach focuses on eliminating activities that do not add value or satisfy customers?

Balanced scorecard

Which approach uses financial, customer, internal business processes, and innovation/learning measures?

Simple composite index

Which common analytic measure is used to improve business performance?

Scatterplot

Which graphical tool is used to illustrate a possible relationship or correlation between two variables?

Surveying customer satisfaction upon checkout

Which key performance indicator can a hotel chain use to measure its ability to meet client tastes and preferences?

Focuses on training

Which phrase is a description of quality assurance?

Missing data Misspelled data

Which two attributes indicate potential data quality issues when evaluating a set of nominal data? Choose 2 answers

Decisions reduce external bias. Decisions foster trust in plans.

Which two decision considerations describe fact-based decision making, according to the quality management principles? Choose 2 answers

Ordinal data

Which type of data are the Olympic medals of gold, silver, and bronze examples of?