Question 1

For the set of numbers 1, 17, 19, 30, 87, X5 refers to

Accepted Answer

A)  1, 17, 19, 30. 
B)  1, 17, 19, 30, 87. 
C)  87. 
D)  5. 
A)  1, 17, 19, 30. 
B)  1, 17, 19, 30, 87. 
C)  87. 
D)  5.

Question 2

Professor Jeffrey assigned each of his students a number and selected 20 for his study by using a table of random numbers. Professor Jeffrey was interested in how the type of feedback received would affect the level of happiness in his students. The students were either praised or insulted and then the levels of happiness were measured by a questionnaire administered at the end of the study. What is the dependent variable of this study?

Accepted Answer

A)  praise 
B)  feedback 
C)  students 
D)  happiness 
A)  praise 
B)  feedback 
C)  students 
D)  happiness

Question 3

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

Accepted Answer

A)  gender 
B)  age 
C)  treatment condition 
D)  test score 
A)  gender 
B)  age 
C)  treatment condition 
D)  test score

Question 4

A drink manufacturer wanted to examine the effect of different can designs on sales. 
a. Name the independent variable. 
b. Name the dependent variable. 
c. Is the dependent variable discrete or continuous?

Accepted Answer

a. can des

Question 5

According to the text, the most important component of an experiment for giving us confidence that our results are meaningful is

Accepted Answer

A)  random sampling. 
B)  random assignment. 
C)  summation notation. 
D)  the manipulation of the dependent variable. 
A)  random sampling. 
B)  random assignment. 
C)  summation notation. 
D)  the manipulation of the dependent variable.

Question 6

Evans et al. (1998) recorded adrenaline levels of children who lived near a newly opened airport to see if the presence of the airport increased stress levels in children. (Increased stress would be associated with increases in adrenaline levels.) In this study we would most likely view adrenaline as

Accepted Answer

A)  a ratio measurement of stress. 
B)  a nominal measure of stress. 
C)  somewhere between an ordinal and an interval measure of stress. 
D)  an absolute measure of stress. 
A)  a ratio measurement of stress. 
B)  a nominal measure of stress. 
C)  somewhere between an ordinal and an interval measure of stress. 
D)  an absolute measure of stress.

Question 7

Dr. Smith measured depressive symptoms using a questionnaire where scores could range from 0 to 40. Then, he used the clinical cutoff of a score of 16 to classify people as depressed or not depressed. Briefly describe the two types of data Dr. Smith had at his disposal.

Accepted Answer

Dr. Smith has data that began

Question 8

Which of the following is NOT an example of "assigning a number to an object"?

Accepted Answer

A)  giving a sensitivity score to a roommate 
B)  measuring a child's IQ 
C)  giving a football player jersey #87 
D)  All of the above are examples of assigning numbers to objects. 
A)  giving a sensitivity score to a roommate 
B)  measuring a child's IQ 
C)  giving a football player jersey #87 
D)  All of the above are examples of assigning numbers to objects.

Question 9

Which scale really isn't much of a scale at all?

Accepted Answer

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

Question 10

If X1 = 1, X2 = 3, and X3 = 5, then the S X = 9.

Accepted Answer

A) True 
 B)False

Question 11

Name three examples of discrete variables.

Accepted Answer

Possible answers inc

Question 12

If X1 = 1, X2 = 3, and X3 = 5 and C = 3, then C S X = 12.

Accepted Answer

A) True 
 B)False

Question 13

Height is a continuous variable.

Accepted Answer

A) True 
 B)False

Question 14

A researcher randomly assigned clients to two conditions (a wait-list control group and a hypnosis group) and measured their smoking reduction. Smoking reduction is an independent variable.

Accepted Answer

A) True 
 B)False

Question 15

What is wrong with the above study when generalizing to people in general?

Accepted Answer

A)  The sample was not randomly assigned. 
B)  The sample was not random sampled from a larger population. 
C)  A nominal scale was used to measure the dependent variable. 
D)  Nothing was wrong with the above study. 
A)  The sample was not randomly assigned. 
B)  The sample was not random sampled from a larger population. 
C)  A nominal scale was used to measure the dependent variable. 
D)  Nothing was wrong with the above study.

Question 16

When we are concerned about the measurement scale, we are concerned about

Accepted Answer

A)  the numbers we have collected. 
B)  the underlying concept which we are trying to measure. 
C)  the interpretation we can give to our resulting statistics. 
D)  both the underlying concept and our interpretation of them. 
A)  the numbers we have collected. 
B)  the underlying concept which we are trying to measure. 
C)  the interpretation we can give to our resulting statistics. 
D)  both the underlying concept and our interpretation of them.

Question 17

Describe two ways to obtain a random sample.

Accepted Answer

Possible answers include: assi

Question 18

If a happiness scale had a true zero point, a score of zero would mean

Accepted Answer

A)  low levels of happiness. 
B)  an absence of happiness. 
C)  an arbitrary level of happiness. 
D)  nothing useful. 
A)  low levels of happiness. 
B)  an absence of happiness. 
C)  an arbitrary level of happiness. 
D)  nothing useful.

For the set of numbers 1, 17, 19, 30, 87, X₅ refers to

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

A drink manufacturer wanted to examine the effect of different can designs on sales. a. Name the independent variable. b. Name the dependent variable. c. Is the dependent variable discrete or continuous?

According to the text, the most important component of an experiment for giving us confidence that our results are meaningful is

Dr. Smith measured depressive symptoms using a questionnaire where scores could range from 0 to 40. Then, he used the clinical cutoff of a score of 16 to classify people as depressed or not depressed. Briefly describe the two types of data Dr. Smith had at his disposal.

Which of the following is NOT an example of "assigning a number to an object"?

Which scale really isn't much of a scale at all?

If X₁ = 1, X₂ = 3, and X₃ = 5, then the S X = 9.

Name three examples of discrete variables.

If X₁ = 1, X₂ = 3, and X₃ = 5 and C = 3, then C S X = 12.

Height is a continuous variable.

A researcher randomly assigned clients to two conditions (a wait-list control group and a hypnosis group) and measured their smoking reduction. Smoking reduction is an independent variable.

What is wrong with the above study when generalizing to people in general?

When we are concerned about the measurement scale, we are concerned about

Describe two ways to obtain a random sample.

If a happiness scale had a true zero point, a score of zero would mean

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

Exam 2: Basic Concepts

For the set of numbers 1, 17, 19, 30, 87, X5 refers to

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

A drink manufacturer wanted to examine the effect of different can designs on sales. a. Name the independent variable. b. Name the dependent variable. c. Is the dependent variable discrete or continuous?

According to the text, the most important component of an experiment for giving us confidence that our results are meaningful is

Dr. Smith measured depressive symptoms using a questionnaire where scores could range from 0 to 40. Then, he used the clinical cutoff of a score of 16 to classify people as depressed or not depressed. Briefly describe the two types of data Dr. Smith had at his disposal.

Which of the following is NOT an example of "assigning a number to an object"?

Which scale really isn't much of a scale at all?

If X1 = 1, X2 = 3, and X3 = 5, then the S X = 9.

Name three examples of discrete variables.

If X1 = 1, X2 = 3, and X3 = 5 and C = 3, then C S X = 12.

Height is a continuous variable.

A researcher randomly assigned clients to two conditions (a wait-list control group and a hypnosis group) and measured their smoking reduction. Smoking reduction is an independent variable.

What is wrong with the above study when generalizing to people in general?

When we are concerned about the measurement scale, we are concerned about

Describe two ways to obtain a random sample.

If a happiness scale had a true zero point, a score of zero would mean

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

For the set of numbers 1, 17, 19, 30, 87, X₅ refers to

If X₁ = 1, X₂ = 3, and X₃ = 5, then the S X = 9.

If X₁ = 1, X₂ = 3, and X₃ = 5 and C = 3, then C S X = 12.