1 WGU C207 Data Driven Decision Making Module 1-5 Test Bank/ Practice Questions with Correct Verified Answers / Rated A+
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 - ANS - 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 - ANS - 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 - ANS - 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 1 / 4
2
- Contains structured data
- Contains unstructured data
- Can be analyzed with traditional spreadsheets - ANS – d
A local plumbing company is analyzing to see how the number weeks taken for their payment receipts is distributed. Which graphical analysis technique should they use?
- Scatterplot
- Pie Chart
- Histogram
- Box Plot - ANS - c
Given the following data set:60, 41, 30, 15, 34, 30 What is the Median?
- 32
- 30
- 34
- 35 - ANS - a
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 - ANS - 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 - ANS - a, d 2 / 4
3
Runners cover 26.2 miles in the Olympics marathon. What level of measurement is this?
- Nominal
- Ordinal
- Interval
- Ratio - ANS - d
What level of measurement is the type of cars produced in Ford factory?
- Nominal
- Ordinal
- Interval
- Ratio - ANS - 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...
- Statistics
- Analytics
- Management Science
- Histograms - ANS - 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 - ANS - c
What level of measurement is this the 10 best cities in the U.S. to retire in?
- Nominal 3 / 4
4
- Ordinal
- Interval
- Ratio - ANS - b
What level of measurement are women's dress sizes (2,4,6, etc.)?
- Nominal
- Ordinal
- Interval
- Ratio - ANS - 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 - ANS - 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 - ANS - 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
- / 4