Question 1

Statistical inference is the science of using a sample of measurements to make generalizations about the important aspects of a population of measurements.

Accepted Answer

A) True 
 B)False  True

Question 2

A random sample is selected so that every element in the population has the same chance of being included in the sample.

Accepted Answer

A) True 
 B)False  True

Question 3

A(n)_____________ variable is a qualitative variable such that there is no meaningful ordering or ranking of the categories.

Accepted Answer

A)  Ratio
B)  Ordinal
C)  Nominative
D)  Interval C

Question 4

Using the following data table of the average hours per week spent on Internet activities by 15- to 18-year-olds for the years 1999-2008,construct the runs plot and interpret.
$\begin{array} { r r } 
\text { Year } & \text { Avg Hrs } \
1999 & 13.5 \
2000 & 15.0 \
2001 & 16.5 \
2002 & 17.7 \
2003 & 18.2 \
2004 & 19.3 \
2005 & 19.5 \
2006 & 19.9 \
2007 & 20.1 \
2008 & 20.4
\end{array}$

Accepted Answer

The answer of Using the following data table of the...

Question 5

Temperature (in degrees Fahrenheit)is an example of a(n)__________ variable.

Accepted Answer

A)  Nominative
B)  Ordinal
C)  Interval
D)  Ratio

Question 6

Selecting many different samples and running many different tests can eventually produce a result that makes a desired conclusion seem to be true when the conclusion is true.

Accepted Answer

A) True 
 B)False

Question 7

If we collect data on the number of wins each team in the NFL had during the 2011-12 season,we have _____________ data.

Accepted Answer

A)  Cross-sectional
B)  Time series

Question 8

Measurements from a population are called

Accepted Answer

A)  Elements.
B)  Observations.
C)  Variables.
D)  Processes.

Question 9

When the data being studied are gathered from a private source,this is referred to as a(n)_______________.

Accepted Answer

A)  Existing data source
B)  Observational data source
C)  Experimental data source
D)  Cross-sectional data source

Question 10

__________ is a necessary component of a runs plot.

Accepted Answer

A)  Observation over time
B)  Qualitative variable
C)  Random sampling of the data
D)  Cross-sectional data

Question 11

Data collected for a particular study are referred to as a data ____________.

Accepted Answer

A)  Variable
B)  Measurement
C)  Set
D)  Element

Question 12

An example of a quantitative variable is the manufacturer of a car.

Accepted Answer

A) True 
 B)False

Question 13

The change in the daily price of a stock is what type of variable?

Accepted Answer

A)  Qualitative
B)  Ordinal
C)  Random
D)  Quantitative

Question 14

Which of the following is NOT an example of unethical statistical practices?

Accepted Answer

A)  Inappropriate interpretation of statistical results
B)  Using graphs to make statistical inferences
C)  Improper sampling
D)  Descriptive measures that mislead the user
E)  None of these

Question 15

Statistical ____________ refers to using a sample of measurements and making generalizations about the important aspects of a population.

Accepted Answer

A)  Sampling
B)  Process
C)  Analysis
D)  Inference

Question 16

In a data set of information on college business students,an example of an element is their cumulative GPA.

Accepted Answer

A) True 
 B)False

Question 17

Examining all population measurements is called a _____________.

Accepted Answer

A)  Census
B)  Frame
C)  Sample
D)  Variable

Question 18

Any characteristic of a population unit is a(n):

Accepted Answer

A)  Measurement
B)  Sample
C)  Observation
D)  Variable

Question 19

Using a nonrandom sample procedure in order to support a desired conclusion is an example of an unethical statistical procedure.

Accepted Answer

A) True 
 B)False

Question 20

College entrance exam scores,such as SAT scores,are an example of a(n)_____________ variable.

Accepted Answer

A)  Ordinal
B)  Ratio
C)  Nominative
D)  Interval

Exam 1: An Introduction to Business Statistics

Statistical inference is the science of using a sample of measurements to make generalizations about the important aspects of a population of measurements.

A random sample is selected so that every element in the population has the same chance of being included in the sample.

A(n) _____________ variable is a qualitative variable such that there is no meaningful ordering or ranking of the categories.

Temperature (in degrees Fahrenheit) is an example of a(n) __________ variable.

Selecting many different samples and running many different tests can eventually produce a result that makes a desired conclusion seem to be true when the conclusion is true.

If we collect data on the number of wins each team in the NFL had during the 2011-12 season,we have _____________ data.

Measurements from a population are called

When the data being studied are gathered from a private source,this is referred to as a(n) _______________.

__________ is a necessary component of a runs plot.

Data collected for a particular study are referred to as a data ____________.

An example of a quantitative variable is the manufacturer of a car.

The change in the daily price of a stock is what type of variable?

Which of the following is NOT an example of unethical statistical practices?

Statistical ____________ refers to using a sample of measurements and making generalizations about the important aspects of a population.

In a data set of information on college business students,an example of an element is their cumulative GPA.

Examining all population measurements is called a _____________.

Any characteristic of a population unit is a(n) :

Using a nonrandom sample procedure in order to support a desired conclusion is an example of an unethical statistical procedure.

College entrance exam scores,such as SAT scores,are an example of a(n) _____________ variable.