Question 1

The use of different colored boxes in the above example is most likely to be a

Accepted Answer

A)  continuous independent variable. 
B)  discrete independent variable. 
C)  continuous dependent variable. 
D)  discrete dependent variable. 
A)  continuous independent variable. 
B)  discrete independent variable. 
C)  continuous dependent variable. 
D)  discrete dependent variable. B

Question 2

An instructor for a course in Psychology of Gender wanted to know if there are gender differences in whether or not students major in the sciences. 
a. Name the independent variable. 
b. Name the dependent variable. 
c. Is the dependent variable discrete or continuous?

Accepted Answer

a. gender 
b. whether or not you major in the sciences 
c. discrete

Question 3

A consumer researcher wanted to examine the effects of using different-colored boxes on shoppers' level of buying her brand of cereal. What is the dependent variable?

Accepted Answer

A)  levels of buying 
B)  kind of cereal 
C)  different colored boxes 
D)  the consumer researcher 
A)  levels of buying 
B)  kind of cereal 
C)  different colored boxes 
D)  the consumer researcher A

Question 4

Classifying students by their major field of study is an example of nominal data.

Accepted Answer

A) True 
 B)False

Question 5

The Greek letter S is a symbol for

Accepted Answer

A)  multiplication. 
B)  suppression. 
C)  the square root. 
D)  summation. 
A)  multiplication. 
B)  suppression. 
C)  the square root. 
D)  summation.

Question 6

In the study of children living near an airport, we first need to be concerned about

Accepted Answer

A)  the underlying scale of adrenaline scores. 
B)  the relationship between numerical scores on adrenaline and underlying stress. 
C)  whether adrenaline increases over time in a continuous fashion. 
D)  the number of children who showed high adrenaline scores. 
A)  the underlying scale of adrenaline scores. 
B)  the relationship between numerical scores on adrenaline and underlying stress. 
C)  whether adrenaline increases over time in a continuous fashion. 
D)  the number of children who showed high adrenaline scores.

Question 7

In an equation, a constant is

Accepted Answer

A)  always represented by the letter "c." 
B)  a term that you can ignore. 
C)  another word for "variable." 
D)  a number that does not change its value in a given situation. 
A)  always represented by the letter "c." 
B)  a term that you can ignore. 
C)  another word for "variable." 
D)  a number that does not change its value in a given situation.

Question 8

The major difference between an interval and a ratio scale is that

Accepted Answer

A)  with an interval scale you know which values represent more of the quantity. 
B)  with an interval scale you can speak meaningfully about a score of 0. 
C)  with a ratio scale you can speak meaningfully about a score of 0. 
D)  both scales carry the same level of information 
A)  with an interval scale you know which values represent more of the quantity. 
B)  with an interval scale you can speak meaningfully about a score of 0. 
C)  with a ratio scale you can speak meaningfully about a score of 0. 
D)  both scales carry the same level of information

Question 9

If we want to obtain a random sample of people to interview, we could best do so by

Accepted Answer

A)  drawing random numbers from a table and linking a number to a person. 
B)  taking every 10th name out of the telephone book. 
C)  knocking on doors and interview whoever answers. 
D)  asking for volunteers. 
A)  drawing random numbers from a table and linking a number to a person. 
B)  taking every 10th name out of the telephone book. 
C)  knocking on doors and interview whoever answers. 
D)  asking for volunteers.

Question 10

When we use paw-lick latency as a measure of temperature sensitivity, latency is

Accepted Answer

A)  an independent variable. 
B)  a categorical variable. 
C)  a continuous variable. 
D)  a discrete variable. 
A)  an independent variable. 
B)  a categorical variable. 
C)  a continuous variable. 
D)  a discrete variable.

Question 11

Use of a sample not randomly selected in an experiment

Accepted Answer

A)  makes random assignment impossible. 
B)  limits the degree to which the results can be generalized to the whole population. 
C)  requires the use of ratio scales of measurement. 
D)  interferes with the use of quantitative independent variables. 
A)  makes random assignment impossible. 
B)  limits the degree to which the results can be generalized to the whole population. 
C)  requires the use of ratio scales of measurement. 
D)  interferes with the use of quantitative independent variables.

Question 12

Which of the following is a discrete variable?

Accepted Answer

A)  gender 
B)  age 
C)  height 
D)  depression score 
A)  gender 
B)  age 
C)  height 
D)  depression score

Question 13

Which of the following is most likely to be an independent variable?

Accepted Answer

A)  running speeds 
B)  depression scores 
C)  paw-lick latencies 
D)  forms of therapy 
A)  running speeds 
B)  depression scores 
C)  paw-lick latencies 
D)  forms of therapy

Question 14

Give one example of each of the following types of data: 
a. nominal 
b. ordinal 
c. interval 
d. ratio

Accepted Answer

a. gender 
b. class

Question 15

Marital status (e.g., single, married, divorced/separated, widowed) is a discrete variable.

Accepted Answer

A) True 
 B)False

Question 16

A student measured the effect on test performance of listening to various types of music while studying. Test performance is a dependant variable.

Accepted Answer

A) True 
 B)False

Question 17

Briefly describe the benefits of random assignment to groups.

Accepted Answer

Random assignment to groups in

Question 18

Calculate S X2 with X1 = 2, X2 = 5.

Accepted Answer

A)  11 
B)  29 
C)  18 
D)  49 
A)  11 
B)  29 
C)  18 
D)  49

Question 19

S XY = S X S Y.

Accepted Answer

A) True 
 B)False

Question 20

Where X is a variable and C is a constant, which of the following equations is true?

Accepted Answer

A)  S (X+
C)  = S X + C 
B)  S (X+
C)  = S C + X 
C)  S CX = X S C 
D)  S CX = C S X 
A)  S (X+
C)  = S X + C 
B)  S (X+
C)  = S C + X 
C)  S CX = X S C 
D)  S CX = C S X

Exam 2: Basic Concepts

The use of different colored boxes in the above example is most likely to be a

An instructor for a course in Psychology of Gender wanted to know if there are gender differences in whether or not students major in the sciences. a. Name the independent variable. b. Name the dependent variable. c. Is the dependent variable discrete or continuous?

A consumer researcher wanted to examine the effects of using different-colored boxes on shoppers' level of buying her brand of cereal. What is the dependent variable?

Classifying students by their major field of study is an example of nominal data.

The Greek letter S is a symbol for

In the study of children living near an airport, we first need to be concerned about

In an equation, a constant is

The major difference between an interval and a ratio scale is that

If we want to obtain a random sample of people to interview, we could best do so by

When we use paw-lick latency as a measure of temperature sensitivity, latency is

Use of a sample not randomly selected in an experiment

Which of the following is a discrete variable?

Which of the following is most likely to be an independent variable?

Give one example of each of the following types of data: a. nominal b. ordinal c. interval d. ratio

Marital status (e.g., single, married, divorced/separated, widowed) is a discrete variable.

A student measured the effect on test performance of listening to various types of music while studying. Test performance is a dependant variable.

Briefly describe the benefits of random assignment to groups.

Calculate S X2 with X1 = 2, X2 = 5.

S XY = S X S Y.

Where X is a variable and C is a constant, which of the following equations is true?

Introduction

Displaying Data

Measures of Central Tendency

Measures of Variability

The Normal Distribution

Basic Concepts of Probability

Sampling Distributions and Hypothesis Testing

Correlation

Regression

Multiple Regression

Hypothesis Tests Applied to Means: One Sample

Hypothesis Tests Applied to Means: Two Related Samples

Hypothesis Tests Applied to Means: Two Independent Samples

Power

One-Way Analysis of Variance

Factorial Analysis of Variance

Repeated-Measures Analysis of Variance

Chi-Square

Nonparametric and Resampling Statistical Tests

Meta-Analysis

Filters

Calculate S X² with X₁ = 2, X₂ = 5.