Exam 1: Introduction to Statistics
Exam 1: Introduction to Statistics130 Questions
Exam 2: Charts and Graphs94 Questions
Exam 3: Descriptive Statistics105 Questions
Exam 4: Probability122 Questions
Exam 5: Discrete Distributions75 Questions
Exam 6: Continuous Distributions107 Questions
Exam 7: Sampling and Sampling Distributions101 Questions
Exam 8: Statistical Inference: Estimation for Single Populations75 Questions
Exam 9: Statistical Inference: Hypothesis Testing for Single Populations73 Questions
Exam 10: Statistical Inferences About Two Populations73 Questions
Exam 11: Analysis of Variance and Design of Experiments75 Questions
Exam 12: Simple Regression Analysis and Correlation75 Questions
Exam 13: Multiple Regression Analysis75 Questions
Exam 14: Building Multiple Regression Models75 Questions
Exam 15: Time-Series Forecasting and Index Numbers74 Questions
Exam 16: Analysis of Categorical Data74 Questions
Exam 17: Nonparametric Statistics79 Questions
Exam 18: Statistical Quality Control75 Questions
Exam 19: Decision Analysis77 Questions
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The basis for inferential statistics is the ability to make decisions about population parameters without having to complete a census of the population.
(True/False)
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A market research analyst has asked consumers to rate the appearance of a new package on a scale of 1 to 5.A 1 means that the appearance is awful while a 5 means that it is excellent.The level of this data is usually considered ___.
(Multiple Choice)
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On discovering an improperly adjusted drill press, Jack Joyner, Director of Quality Control, ordered an inspection of every fifth casting drilled during the evening shift.Less than 1% of the castings were defective, so Jack released the evening shift's production to assembly.This is an example of ___.
(Multiple Choice)
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How much inventory do Christmas tree sales lots keep? A researcher goes from location to location around the city counting the number of trees in each lot.These numbers most likely represent what level of data?
(Multiple Choice)
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Nominal and ordinal data are sometimes referred to as quantitative data.
(True/False)
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The complete collection of all entities under study is called the sample.
(True/False)
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The accuracy, quality and correctness of data is referred to as veracity.
(True/False)
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The need for new methodologies and processing techniques regarding business data has arisen because _____________
(Multiple Choice)
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All numerical data must be analyzed statistically in the same way because all of them are represented by numbers.
(True/False)
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Utilizing visual technology to convey information to a diverse audience with a wide range of backgrounds would be an example of _______________.
(Multiple Choice)
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After acquiring a major investment firm, managers of the acquiring company needed a process to transform the mountains of the acquired company's data into useful business information.This can be done with _________________.
(Multiple Choice)
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Big data should encompass all four characteristics of variety, velocity, virtuous, and volume.
(True/False)
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Manuel Banales, Marketing Director of Plano Power Plants, Inc.'s Electrical Division, is directing a study to identify and assess the relative importance of product features.Manuel directs his staff to design a survey questionnaire for distribution to all of Plano's 954 customers.For this study, the set of 954 customers is ___.
(Multiple Choice)
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Manuel Banales, Marketing Director of Plano Power Plants, Inc.'s Electrical Division, is leading a study to identify and assess the relative importance of product features.Manuel directs his staff to design a survey questionnaire and distribute it to all of Plano's 954 customers.Manuel is ordering a ___.
(Multiple Choice)
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Parametric statistics require that all data used be either interval or nominal.
(True/False)
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On discovering an improperly adjusted drill press, Jack Joyner, Director of Quality Control, ordered an inspection of every fifth casting drilled during the evening shift.Jack is ordering a ___.
(Multiple Choice)
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Interval- and ratio-level data are sometimes referred to as quantitative data.
(True/False)
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