QNT 275 Week 2 Quiz

​Which of the following variables is qualitative?​Height​Temperature​GenderWeight
  • question2

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 ____________.​Nominal Scale​Ratio Scale​Interval Scale​Ordinal Scale
  • question3
​Which of the following represents a population and a sample from that population?​Teachers in a high school and members of the parent teacher group​Residents of Albany, New York, and registered voters in Albany, New York​Freshmen at St. Joseph’s University and basketball players at St. Joseph’s University​Fans at a concert who purchase t-shirts and fans at a concert who purchase soda
  • question4
Which of the following variables is quantitative?​​Religious Affiliation​Gender​Marital Status​​Temperature
  • question5

The accompanying chart shows the numbers of books written by each author
in a collection of cookbooks. What type of chart is this?​Bar chart for quantitative data​Frequency histogram for quantitative data​Bar chart for qualitative data​Frequency histogram for qualitative data
  • question6
​In order to summarize qualitative data, a useful tool is a __________.​Frequency Distribution​Line Graph​Histogram​Stem-and-Leaf Diagram
  • question7

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?​The survey must include items
that ask customers about their plumbing experiences, the survey sample
must include the first 15 customers off the customer database, and the
survey method must be repeatable.​The survey must include items
that ask customers to rate the quality of plumbing service calls, the
survey sample must represent all parts of the customer population, and
the survey method must be repeatable.​The survey must include
items that ask customers to rate the appearance of the plumbing store,
the survey must include all customers, and the survey method must
include setting up a table outside the local dollar store.​The
survey must include items that ask customers to rate the friendliness of
the receptionist, the survey must include all customers from the north
side of the city, and the survey method must appeal to all respondents.
  • question8
A stem-and-leaf diagram is constructed by separating each value of a data set into two parts. What are these parts?​Stem consisting of the leftmost digits and leaf consisting of the second digit​Stem consisting of the second digit and leaf consisting of the last digit​Stem consisting of the leftmost digits and leaf consisting of the last digit​Stem consisting of the last digit and leaf consisting of the leftmost digits
  • question9
A population consists of _________________.​a subject of interest in a sample​all items of interest in a statistical problem​all items of interest in a sample​a subject of interest in a statistical problem
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