Question 1

An investigator studying race classified people into three racial categories--black,white,and Hispanic.This is an example of a(n)_____variable.

Accepted Answer

A)  nominal
B)  ordinal
C)  interval
D)  ratio A

Question 2

Random sampling is an ideal that is seldom achieved in practice.

Accepted Answer

A) True 
 B)False  True

Question 3

The number of grains of sand in a sand box has ____ properties.

Accepted Answer

A)  continuous
B)  discrete
C)  ordinal
D)  nominal B

Question 4

The use of random sampling procedures guarantees that a sample will be representative of the population.

Accepted Answer

A) True 
 B)False

Question 5

Given the following data for X and Y variables,calculate ÓXY

Accepted Answer

A)  13
B)  17
C)  22
D)  39

Question 6

Use the following data to answer (SX)2 =_____

Accepted Answer

A)  17
B)  71
C)  200
D)  289

Question 7

The essential characteristic of random sampling is that every member of the population has an equal chance of being selected for the sample.

Accepted Answer

A) True 
 B)False

Question 8

Dr.Jones wrote a book on Women's Satisfaction with their Marriage and reported 90% of American women are unhappy.However,she failed to report only 10% of the women surveyed actually replied.Dr.Jones has _____.

Accepted Answer

A)  a bias sample
B)  a sample of unhappy women
C)  a random sample
D)  both a bias sample and a sample of unhappy women

Question 9

On the basis of observing the population,the researcher makes generalizations to the sample.

Accepted Answer

A) True 
 B)False

Question 10

If you receive first place in a 5k run that means a ____________________scale of measurement was used.

Accepted Answer

The answer of If you receive first place in a...

Question 11

ÓX2 = 30

Accepted Answer

A) True 
 B)False

Question 12

What are the four levels of measurement,in order from the lowest to the highest level in the measurement hierarchy?

Accepted Answer

A)  nominal,ordinal,ratio,interval
B)  ordinal,nominal,interval,ratio
C)  interval,ordinal,ratio,nominal
D)  nominal,ordinal,interval,ratio

Question 13

Distinguish between a population and a sample.Give an example of each.

Accepted Answer

The answer of Distinguish between a population and a sample.Give...

Question 14

When Doctors are studying the effects of Ritalin on the number of words recalled the dependent variable is considered ____________________.

Accepted Answer

The answer of When Doctors are studying the effects of...

Question 15

The probability of getting heads on a penny following 1 flip of the coin is____________________.

Accepted Answer

The answer of The probability of getting heads on a...

Question 16

In Dr.Qui's study above the independent variable is____________________.

Accepted Answer

The answer of In Dr.Qui's study above the independent variable...

Question 17

What type of scale is being used for each of the following measurements?
a.The number of arithmetic problems correctly solved
b.Class standing (i.e.One's rank in the graduating class)
c.Type of phobia
d.Body temperature in (F)
e.Annual income in dollars
f.Place in dog show
g.Heart rate in beats per minute

Accepted Answer

The answer of What type of scale is being used...

Question 18

____variables can assume only a finite number of values between any two points;____ variables theoretically can assume an infinite number of values between any two points.

Accepted Answer

A)  Discrete;continuous
B)  Continuous;discrete
C)  Discrete;qualitative
D)  Quantitative;continuous

Question 19

Ordinal measures provide information about the magnitude of the differences between the objects.

Accepted Answer

A) True 
 B)False

Question 20

Suppose a researcher is interested in how fast a person can identify the names on a list of objects.In this situation,the variable of speed is

Accepted Answer

A)  quantitative,discrete,and interval
B)  qualitative,continuous,and nominal
C)  quantitative,continuous,and ratio
D)  quantitative,discrete,and ordinal

Exam 1: Introduction and Mathematical Preliminaries

An investigator studying race classified people into three racial categories--black,white,and Hispanic.This is an example of a(n) _____variable.

Random sampling is an ideal that is seldom achieved in practice.

The number of grains of sand in a sand box has ____ properties.

The use of random sampling procedures guarantees that a sample will be representative of the population.

Given the following data for X and Y variables,calculate ÓXY

Use the following data to answer (SX) ² =_____

The essential characteristic of random sampling is that every member of the population has an equal chance of being selected for the sample.

Dr.Jones wrote a book on Women's Satisfaction with their Marriage and reported 90% of American women are unhappy.However,she failed to report only 10% of the women surveyed actually replied.Dr.Jones has _____.

On the basis of observing the population,the researcher makes generalizations to the sample.

If you receive first place in a 5k run that means a ____________________scale of measurement was used.

ÓX² = 30

What are the four levels of measurement,in order from the lowest to the highest level in the measurement hierarchy?

Distinguish between a population and a sample.Give an example of each.

When Doctors are studying the effects of Ritalin on the number of words recalled the dependent variable is considered ____________________.

The probability of getting heads on a penny following 1 flip of the coin is____________________.

In Dr.Qui's study above the independent variable is____________________.

variables can assume only a finite number of values between any two points; variables theoretically can assume an infinite number of values between any two points.

Ordinal measures provide information about the magnitude of the differences between the objects.

Suppose a researcher is interested in how fast a person can identify the names on a list of objects.In this situation,the variable of speed is

Exam 1: Introduction and Mathematical Preliminaries

An investigator studying race classified people into three racial categories--black,white,and Hispanic.This is an example of a(n) _____variable.

Random sampling is an ideal that is seldom achieved in practice.

The number of grains of sand in a sand box has ____ properties.

The use of random sampling procedures guarantees that a sample will be representative of the population.

Given the following data for X and Y variables,calculate ÓXY

Use the following data to answer (SX) 2 =_____

The essential characteristic of random sampling is that every member of the population has an equal chance of being selected for the sample.

Dr.Jones wrote a book on Women's Satisfaction with their Marriage and reported 90% of American women are unhappy.However,she failed to report only 10% of the women surveyed actually replied.Dr.Jones has _____.

On the basis of observing the population,the researcher makes generalizations to the sample.

If you receive first place in a 5k run that means a ____________________scale of measurement was used.

ÓX2 = 30

What are the four levels of measurement,in order from the lowest to the highest level in the measurement hierarchy?

Distinguish between a population and a sample.Give an example of each.

When Doctors are studying the effects of Ritalin on the number of words recalled the dependent variable is considered ____________________.

The probability of getting heads on a penny following 1 flip of the coin is____________________.

In Dr.Qui's study above the independent variable is____________________.

____variables can assume only a finite number of values between any two points;____ variables theoretically can assume an infinite number of values between any two points.

Ordinal measures provide information about the magnitude of the differences between the objects.

Suppose a researcher is interested in how fast a person can identify the names on a list of objects.In this situation,the variable of speed is

Use the following data to answer (SX) ² =_____

ÓX² = 30

variables can assume only a finite number of values between any two points; variables theoretically can assume an infinite number of values between any two points.