module-1-6-practice-questions

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Jan 9, 2024

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Studocu is not sponsored or endorsed by any college or university Module 1-6 practice questions Data-Driven Decision Making (Western Governors University) Studocu is not sponsored or endorsed by any college or university Module 1-6 practice questions Data-Driven Decision Making (Western Governors University) Downloaded by Testing Improvements (testimprovements@gmail.com) lOMoARcPSD|8741209
Module 1 1. _________________is the discovery, analysis and communication of meaningful patterns in data . Analytics 2. _________________is a prejudice in data that results when either the respondent or the interviewer have and agenda that afects responses . Information Bias 3. _________________places data into categories that are ordered by a predetermined criteria . Ordinal Data 4. _________________occurs when something (for example data or survey response) is missing . Omission Error 5. _________________is numerical data that is ordered, is equal distance apart and does not have a natural zero. Interval Data 6. _________________is consistent and repeatable . Reliable Data 7. _________________represents errors in data caused by unpredictable statistical fuctuations . * Random Error 8. _________________places data into “either or” categories or identifes by name or characteristic. * Nominal Data 9. _________________includes cleaning and storage of collected data . * Data Management 10. _________________is a massive amount of data that is difcult to process using traditional database and software techniques. Big Data 11. _________________is numerical data that has a natural zero allowing this data to be added, subtracted, multiplied, and divided. Downloaded by Testing Improvements (testimprovements@gmail.com) lOMoARcPSD|8741209
Ratio Data 12. _________________is a prejudice in data that results when the sample is not representative of the population be tested Measurement Bias 13. Why is quantitative analysis and analytics important in decision making. Decisions are less subjective Analytics can be explanatory Managers can build predictive models 14. Sales for the Northern Region are expected to decrease 2% in the next fscal year Predictive Analysis 15. The median household income for New York City from 2009 – 2013 is $58,003 . Descriptive Analysis 16. Alternating two trains between 5:00 p.m. and 7:00 p.m. will increase on time arrivals Prescriptive Analysis 17. The largest consumer group of the product is female. Descriptive Analysis 18. Employee turnover for the organization will be more than 5%. Predictive Analysis 19. Increasing the ratio of ingredient A to ingredient B to 1:1.5 will yield more product . Prescriptive Analysis 20. Stage 1 of the Davenport-Kim Three-stage Model includes which two of the following steps? * Review of previous Problem Recognition Downloaded by Testing Improvements (testimprovements@gmail.com) lOMoARcPSD|8741209
21. Stage 2 of the Davenport-Kim Three-stage Model includes which two of the following steps? * Solve the problem Data collection Measurement Scale 1. Which data type is types of cars produced in a factory? Nomina l 2. Which data type is distance between each process step measured in inches ? Ratio 4. Which data type is the age group of survey participants? Ordinal 5. What type of data is a pain scale ( example: 1 – 10 )? Interval 6. What type of data are women’s dress sizes ? Interval 7. What type of data is the age of each participant in a survey ? Ratio 7. What type of data are sales total for the day in dollars ? Ratio 8. Select the elements of an Experimental Study : (Choose 3) Response Treatments Experimental units DATA MANAMMENT AND DATA ERROR 1. This bias occurs if the sample is not randomized . Measurement Downloaded by Testing Improvements (testimprovements@gmail.com) lOMoARcPSD|8741209
2. When an instrument produces a consistent output, it is: Reliable 3. This type of error will cancel itself out over a large number of measurements. Random 4. The use of a placebo that is known by the treatment allocator or researcher is considered a(n): Blind Study 5. Cleaning and storing collected data is: Data Management Module 2 1. Which of the following statistics are unafected by a single large outlier ? Median Interquartile range (IQR) Mode 2. Which of the following is most suitable for policy making based on income distribution? * Median 3. If we study data from a population whose mean is 200 and standard deviation is 30, which of the following data points has a z-score of -3? * 110 4. Which of the following statistics measures the spread of the dataset away from mean? Variance 5. Which of the following are measures of spread or variability of a dataset ? Interquartile Range (IQR) Range Variance 6. An experiment consists of rolling a die and fipping a coin. Which two choices below best apply for computing the probability of rolling a 6 on a die AND fipping head on a coin? Downloaded by Testing Improvements (testimprovements@gmail.com) lOMoARcPSD|8741209
Multiplication & Intersection 7. An experiment consists of rolling a die and fipping a coin. Which two choices below best apply for computing the probability of rolling a 6 on a die OR fipping head on a coin? Addition & Union 8. The probability that a baby is a girl, given that the baby is wearing pink is 0.8. The probability that a baby is a girl is 0.5. Which of the choices below best applies for determining the probability that a baby is wearing pink GIVEN THAT the baby is a girl? Bayes 9. A government ofcial noticed that Total US Highway Fatality Rate was strongly correlated to the tons of lemons imported. Before concluding that the more lemons we import the lower the fatality rate, what is the main issue should the ofcial think about here? What is the slope of the regression line? 11. For the scatter diagram below, which of the following describes the correlation? Downloaded by Testing Improvements (testimprovements@gmail.com) lOMoARcPSD|8741209
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