QNT 275 Week 2 Quiz

In order to summarize qualitative data, a useful tool is a __________. 

Which of the following variables is qualitative? 

Which of the following variables is quantitative?

Which of the following represents a population and a sample from that population?

A stem-and-leaf diagram is constructed by separating each value of a data set into two parts. What are these parts?

A population consists of _________________.

ABC Plumbing wants to understand its customers’ perceptions of the quality of the company’s plumbing service calls. They plan to survey a sample of its customer base. What will ABC need to do to ensure that their data is valid and reliable?

A recent survey of 200 small firms (annual revenue less than $10 million) asked whether an increase in the minimum wage would cause the firm to decrease capital spending. Possible responses to the survey question were: “Yes,” “No,” or “Don’t Know.” These data are best classified as ____________. 

The accompanying chart shows the numbers of books written by each author in a collection of cookbooks. What type of chart is this?

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