Question 1

Indicate whether the following are examples of testing relationships or differences. 
a. Increased smoking during pregnancy is associated with lower birth weight of infants. 
b. Males tend to engage in more physical aggression than females. 
c. Students in the study skills course had higher grades than students who were not in the study skills course.

Accepted Answer

a. relatio...

Question 2

Which of the following is NOT a potential contextual cue in the study of mice injected with morphine?

Accepted Answer

A)   the morphine dose injected
B)   the room the injection occurs in
C)   the color of the cage the injection occurs in
D)   the size of the cage the injection occurs in

Question 3

Briefly describe the importance of random samples in statistics.

Accepted Answer

Random samples increase our co...

Question 4

The number of males and females in this class is an example of categorical data rather than measurement data.

Accepted Answer

A) True 
 B)False

Question 5

If you were interested in finding out how learning increases with increases in studying, what statistical question would you be asking?

Accepted Answer

A)   Is there a relationship?
B)   Is there a difference?
C)   Is there a variable?
D)   A decision tree is needed to answer this question.

Question 6

Comparing the grade point average of students who took a study skills course to the grade point average of students who did not is an example of testing a relationship.

Accepted Answer

A) True 
 B)False

Question 7

In deciding on which statistical procedure to employ for a set of data, which of the following questions is least important?

Accepted Answer

A)   Are the data measurement or categorical?
B)   Are we looking for differences or relationships?
C)   How many participants contributed to the data set?
D)   How many groups and variables are involved? C

Question 8

To understand an example, you need to understand the logic behind the experiment that serves as the example. Morphine tolerance in the example in Chapter 1 would be shown when

Accepted Answer

A)   paw-lick latencies decrease over time with repeated injections of morphine.
B)   paw-lick latencies increase over time with repeated injections of morphine.
C)   paw-lick latency do not vary as a function of time.
D)   short latencies indicate reduced pain sensitivity.

Question 9

Why is it appropriate to assess the number of ears college sophomores have by counting one sophomore's ears, but it is not appropriate to assess how intelligent professors are by giving one professor an IQ test?

Accepted Answer

A)   There is less variability in number of ears for sophomores than intelligence for professors.
B)   There is more variability in number of ears for sophomores than intelligence for professors.
C)   It is appropriate to only give one professor the IQ test.
D)   College sophomores are harder to assess than professors. A

Question 10

Comparing the grade point average of students who took a study skills course to the grade point average of students who did not is an example of inferential statistics rather than descriptive statistics.

Accepted Answer

A) True 
 B)False

Question 11

Because it is impossible to make an unlimited number of observations, researchers often collect data from _______ instead of from _______.

Accepted Answer

A)   samples; populations
B)   parameters; populations
C)   statistics; samples
D)   parameters; statistics

Question 12

A researcher obtained attractiveness ratings on a scale from 1 to 100. She then classified people into "attractive" and "unattractive" groups on the basis of these scores. In this example, the researcher used _______ data to create _______ data.

Accepted Answer

A)   descriptive; inferential
B)   inferential; logical
C)   categorical; measurement
D)   measurement; categorical D

Question 13

Which of the following best illustrates the conclusions that statisticians draw from experiments?

Accepted Answer

A)   Y = 12 X 2 + 3 X - 7
B)   The average of the sample is 12.4.
C)   Male teenage delinquents show higher levels of testosterone on average than do male non-delinquents.
D)   The Gross National Product increased 2 points last year.

Question 14

The type of data, categorical or measurement is not an important consideration when selecting a statistical procedure.

Accepted Answer

A) True 
 B)False

Question 15

The grade point average of a random sample of students surveyed in a dining hall is a statistic.

Accepted Answer

A) True 
 B)False

Question 16

In order for a researcher to be able to estimate accurately the parameters of a population from his or her sample, the sample must be

Accepted Answer

A)   very large.
B)   racially diverse.
C)   low in variability.
D)   random.

Question 17

You would need the largest sample if you wanted to obtain a fairly accurate estimate of

Accepted Answer

A)   the average allowance of high school sophomores in Burlington High School.
B)   the average income of college students in the United States.
C)   the average family income in California.
D)   the average starting salary of graduating history majors.

Question 18

Another name for measurement data is _______ data.

Accepted Answer

A)   frequency
B)   categorical
C)   quantitative
D)   numerical

Question 19

If you want to study the effect of hormonal changes as boys reach adolescence, your sample would most likely include

Accepted Answer

A)   pre-adolescent and post-adolescent boys.
B)   adolescent boys.
C)   pre-adolescent and post-adolescent girls.
D)   adult men.

Question 20

Which of the following would come closest to recruiting a random sample of college students?

Accepted Answer

A)   drawing 50 telephone numbers from a hat containing the phone numbers of all students
B)   advertising for 50 volunteers with posters in the dining halls
C)   asking 50 people in the library on Saturday morning to participate
D)   calling the first 50 names from an alphabetical list of all students

Exam 1: Introduction

Correct Answer
verified
a. relatio...
View Answer

Which of the following is NOT a potential contextual cue in the study of mice injected with morphine?

Correct Answer
verified

Briefly describe the importance of random samples in statistics.

Correct Answer
verified
Random samples increase our co...
View Answer

The number of males and females in this class is an example of categorical data rather than measurement data.

Correct Answer
verified

If you were interested in finding out how learning increases with increases in studying, what statistical question would you be asking?

Correct Answer
verified

Comparing the grade point average of students who took a study skills course to the grade point average of students who did not is an example of testing a relationship.

Correct Answer
verified

In deciding on which statistical procedure to employ for a set of data, which of the following questions is least important?

Correct Answer
verified
C

To understand an example, you need to understand the logic behind the experiment that serves as the example. Morphine tolerance in the example in Chapter 1 would be shown when

Correct Answer
verified

Why is it appropriate to assess the number of ears college sophomores have by counting one sophomore's ears, but it is not appropriate to assess how intelligent professors are by giving one professor an IQ test?

Correct Answer
verified
A

Comparing the grade point average of students who took a study skills course to the grade point average of students who did not is an example of inferential statistics rather than descriptive statistics.

Correct Answer
verified

Because it is impossible to make an unlimited number of observations, researchers often collect data from _ instead of from _.

Correct Answer
verified

A researcher obtained attractiveness ratings on a scale from 1 to 100. She then classified people into "attractive" and "unattractive" groups on the basis of these scores. In this example, the researcher used _ data to create _ data.

Correct Answer
verified
D

Which of the following best illustrates the conclusions that statisticians draw from experiments?

Correct Answer
verified

The type of data, categorical or measurement is not an important consideration when selecting a statistical procedure.

Correct Answer
verified

The grade point average of a random sample of students surveyed in a dining hall is a statistic.

Correct Answer
verified

In order for a researcher to be able to estimate accurately the parameters of a population from his or her sample, the sample must be

Correct Answer
verified

You would need the largest sample if you wanted to obtain a fairly accurate estimate of

Correct Answer
verified

Another name for measurement data is _______ data.

Correct Answer
verified

If you want to study the effect of hormonal changes as boys reach adolescence, your sample would most likely include

Correct Answer
verified

Which of the following would come closest to recruiting a random sample of college students?

Correct Answer
verified

Exam 1: Introduction

Correct Answerverifieda. relatio...View AnswerShow Answer

Which of the following is NOT a potential contextual cue in the study of mice injected with morphine?

Correct AnswerverifiedShow Answer

Briefly describe the importance of random samples in statistics.

Correct AnswerverifiedRandom samples increase our co...View AnswerShow Answer

The number of males and females in this class is an example of categorical data rather than measurement data.

Correct AnswerverifiedShow Answer

If you were interested in finding out how learning increases with increases in studying, what statistical question would you be asking?

Correct AnswerverifiedShow Answer

Comparing the grade point average of students who took a study skills course to the grade point average of students who did not is an example of testing a relationship.

Correct AnswerverifiedShow Answer

In deciding on which statistical procedure to employ for a set of data, which of the following questions is least important?

Correct AnswerverifiedC

To understand an example, you need to understand the logic behind the experiment that serves as the example. Morphine tolerance in the example in Chapter 1 would be shown when

Correct AnswerverifiedShow Answer

Why is it appropriate to assess the number of ears college sophomores have by counting one sophomore's ears, but it is not appropriate to assess how intelligent professors are by giving one professor an IQ test?

Correct AnswerverifiedA

Comparing the grade point average of students who took a study skills course to the grade point average of students who did not is an example of inferential statistics rather than descriptive statistics.

Correct AnswerverifiedShow Answer

Because it is impossible to make an unlimited number of observations, researchers often collect data from _______ instead of from _______.

Correct AnswerverifiedShow Answer

A researcher obtained attractiveness ratings on a scale from 1 to 100. She then classified people into "attractive" and "unattractive" groups on the basis of these scores. In this example, the researcher used _______ data to create _______ data.

Correct AnswerverifiedD

Which of the following best illustrates the conclusions that statisticians draw from experiments?

Correct AnswerverifiedShow Answer

The type of data, categorical or measurement is not an important consideration when selecting a statistical procedure.

Correct AnswerverifiedShow Answer

The grade point average of a random sample of students surveyed in a dining hall is a statistic.

Correct AnswerverifiedShow Answer

In order for a researcher to be able to estimate accurately the parameters of a population from his or her sample, the sample must be

Correct AnswerverifiedShow Answer

You would need the largest sample if you wanted to obtain a fairly accurate estimate of

Correct AnswerverifiedShow Answer

Another name for measurement data is _______ data.

Correct AnswerverifiedShow Answer

If you want to study the effect of hormonal changes as boys reach adolescence, your sample would most likely include

Correct AnswerverifiedShow Answer

Which of the following would come closest to recruiting a random sample of college students?

Correct AnswerverifiedShow Answer

Correct Answer
verified
a. relatio...
View Answer

Correct Answer
verified

Correct Answer
verified
Random samples increase our co...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
verified

Because it is impossible to make an unlimited number of observations, researchers often collect data from _ instead of from _.

Correct Answer
verified

A researcher obtained attractiveness ratings on a scale from 1 to 100. She then classified people into "attractive" and "unattractive" groups on the basis of these scores. In this example, the researcher used _ data to create _ data.

Correct Answer
verified
D

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified