QNT 275 Week 2 Quiz

QNT/275STATISTICS FOR DECISION MAKINGThe Latest Version A+ Study Guide Download Link:

https://uopcourses.com/category/qnt-275/



·        
question1

​Which of the following variables is
qualitative? 

o   

​Height

o   

​Temperature

o   

​Gender

o   

Weight

·        
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
____________. 

o   

​Nominal Scale

o   

​Ratio Scale

o   

​Interval Scale

o   

​Ordinal Scale

·        
question3

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

o   

​Teachers in a high school and members of the
parent teacher group

o   

​Residents
of Albany, New York, and registered voters in Albany, New York

o   

​Freshmen at St. Joseph's University and
basketball players at St. Joseph's University

o   

​Fans at a concert who purchase t-shirts and
fans at a concert who purchase soda

·        
question4

Which of the following variables is quantitative?​

o   

​Religious
Affiliation

o   

​Gender

o   

​Marital Status

o   

​​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?



o   

​Bar
chart for quantitative data

o   

​Frequency histogram for quantitative data

o   

​Bar chart for qualitative data

o   

​Frequency histogram for qualitative data

·        
question6

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

o   

​Frequency Distribution

o   

​Line Graph

o   

​Histogram

o   

​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?

o   

​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.

o   

​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.

o   

​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.

o   

​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?

o   

​Stem
consisting of the leftmost digits and leaf consisting of the second digit

o   

​Stem consisting of the second digit and leaf
consisting of the last digit

o   

​Stem consisting of the leftmost digits and
leaf consisting of the last digit

o   

​Stem consisting of the last digit and leaf
consisting of the leftmost digits

·        
question9

A population consists of _________________.

o   

​a subject of interest in a sample

o   

​all
items of interest in a statistical problem

o   

​all items of interest in a sample

o   

​a subject of interest in a statistical
problem

 
Powered by