Quiz 1_Math302.docx - Question 1 of 20 0.0 1.0 Points What...

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Question 1 of 20 0.0/ 1.0 Points What type of sampling is being employed if the population is divided into economic classes and a sample is chosen from each economic class to be surveyed? A. systematic sampling B. cluster sampling C. random sampling D. stratified sampling Answer Key: D Question 2 of 20 1.0/ 1.0 Points Boxplots are most useful for. A. comparing two populations graphically B. calculating the median of the data
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C. comparing the mean to the median D. calculating the mean of the data Answer Key: A Question 3 of 20 1.0/ 1.0 Points A time series plot is essentially a: A. diagram B. figure C. histogram D. Scatterplot Answer Key: D Question 4 of 20 1.0/ 1.0 Points
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A variable is classified as ordinal if: A. there is a natural ordering of categories B. we track the variable through a period of time C. there is no natural ordering of categories D. the data arise from continuous measurements Answer Key: A Question 5 of 20 1.0/ 1.0 Points Which of the following correctly describes the relationship between a sample and a population? A. A population and a sample are not related. B. A sample is a group of subjects selected from a population to be studied.
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C. A sample is a group of populations that are subject to observation. D. A population is a group of samples that may or may not be included in a study Answer Key: B Question 6 of 20 1.0/ 1.0 Points For a boxplot, the box itself represents what percent of the observations?
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