Exam 1: An Introduction to Business Statistics and Analytics
Exam 1: An Introduction to Business Statistics and Analytics98 Questions
Exam 2: Descriptive Statistics and Analytics: Tabular and Graphical Methods120 Questions
Exam 3: Descriptive Statistics and Analytics: Numerical Methods145 Questions
Exam 4: Probability and Probability Models150 Questions
Exam 5: Predictive Analytics I: Trees, K-Nearest Neighbors, Naive Bayes,101 Questions
Exam 6: Discrete Random Variables150 Questions
Exam 7: Continuous Random Variables150 Questions
Exam 8: Sampling Distributions111 Questions
Exam 9: Confidence Intervals149 Questions
Exam 10: Hypothesis Testing150 Questions
Exam 11: Statistical Inferences Based on Two Samples140 Questions
Exam 12: Experimental Design and Analysis of Variance132 Questions
Exam 13: Chi-Square Tests120 Questions
Exam 14: Simple Linear Regression Analysis147 Questions
Exam 15: Multiple Regression and Model Building85 Questions
Exam 16: Predictive Analytics Ii: Logistic Regression, Discriminate Analysis,101 Questions
Exam 17: Time Series Forecasting and Index Numbers161 Questions
Exam 18: Nonparametric Methods103 Questions
Exam 19: Decision Theory90 Questions
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The process of assigning a value of a variable to each element in a data set is called ________.
(Multiple Choice)
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Data collected for a particular study are referred to as a data ________.
(Multiple Choice)
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________ is the difference between a numerical descriptor of the population and the corresponding descriptor of the sample.
(Multiple Choice)
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Which of the following is a type of question used in survey research?
(Multiple Choice)
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Prescriptive analytics involve methods used to find anomalies, patterns, and associations in data sets with the purpose of predicting future outcomes.
(True/False)
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A ________ is a display of individual measurements versus time.
(Multiple Choice)
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A quantitative variable can also be referred to as a categorical variable.
(True/False)
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Using a nonrandom sample procedure in order to support a desired conclusion is an example of an unethical statistical procedure.
(True/False)
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If we collect data on the number of wins the Dallas Cowboys earned each of the past 10 years, we have ________ data.
(Multiple Choice)
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A study is being conducted on the effect of gas price on the number of miles driven in a given month. Residents in two cities, one on the East Coast and one on the West Coast, are randomly selected and asked to complete a questionnaire on the type of car they drive, the number of miles they live from work, the number of children under 18 in their household, their monthly income, and the number of miles they have driven over the past 30 days. List the response variable(s).
(Short Answer)
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Sampling error occurs because a characteristic of a random sample may not exactly equal the population characteristic that we are attempting to estimate.
(True/False)
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If we collect data on the number of wins each team in the NFL had during the 2011-12 season, we have ________ data.
(Multiple Choice)
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A common practice in selecting a sample from a large geographic area is multistage cluster sampling.
(True/False)
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Jersey numbers of soccer players is an example of a(n) ________ variable.
(Multiple Choice)
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________ occurs when some population elements are excluded from the process of selecting the sample.
(Multiple Choice)
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A population is a set that includes all elements about which we wish to draw a conclusion.
(True/False)
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Daily high temperature in a local community collected over a 30-day time period is an example of cross-sectional data.
(True/False)
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