Question 1

The variable systematically changed or manipulated by a researcher in an experiment is called the

Accepted Answer

A) independent variable. 
B) correlational variable. 
C) dependent variable. 
D) extraneous variable. 
A) independent variable. 
B) correlational variable. 
C) dependent variable. 
D) extraneous variable.

Question 2

A relationship is not present when

Accepted Answer

A) each unique Y score is paired with one and only one X score. 
B) as the Y scores increase, the X scores also increase. 
C) as the Y scores decrease, the X scores increase. 
D) virtually the same set of Y scores is paired with every X score. 
A) each unique Y score is paired with one and only one X score. 
B) as the Y scores increase, the X scores also increase. 
C) as the Y scores decrease, the X scores increase. 
D) virtually the same set of Y scores is paired with every X score.

Question 3

For each variable, place a checkmark under the correct measurement scale and type.

Accepted Answer

The answer of For each variable, place a checkmark under...

Question 4

Suppose you are interested in how participants perform under different temperature conditions.You select 30 participants and assign them to work in one of three rooms.The rooms differ only with respect to temperature.You instruct all participants to solve the same jigsaw puzzle, and then you measure how long it takes each one to finish. This research is an example of

Accepted Answer

A) a correlational study. 
B) population measurement. 
C) an experimental study. 
D) the use of descriptive statistics. 
A) a correlational study. 
B) population measurement. 
C) an experimental study. 
D) the use of descriptive statistics.

Question 5

Betty insists that ratio scales are the only measurement scales that contain the number 0.Is she correct?

Accepted Answer

Technically, Betty is only partially cor

Question 6

Which of the following is not a purpose of statistical procedures?

Accepted Answer

A) Organizing data 
B) Summarizing data 
C) Hypothesizing data 
D) Communicating data 
A) Organizing data 
B) Summarizing data 
C) Hypothesizing data 
D) Communicating data

Question 7

A researcher investigated whether a person's mood influences another person's mood.The researcher divided the participants into three groups.Participants in the first group interacted with a happy person.Participants in the second group interacted with a sad person.Participants in the third group interacted with an emotionally neutral person.After the interaction, the researcher measured how happy the participants were.What are the conditions of the independent variable in this study?

Accepted Answer

Happy, sad

Question 8

Of the following data sets, which shows a relationship?

Accepted Answer

A)   
B)   
C)   
D)   
A)   
B)   
C)   
D)

Question 9

Which of the following is a variable?

Accepted Answer

A) The number of students in your statistics class today 
B) The date and month of the 4th of July 
C) The height of the players on a basketball team 
D) Your latest test score 
A) The number of students in your statistics class today 
B) The date and month of the 4th of July 
C) The height of the players on a basketball team 
D) Your latest test score

Question 10

A specific amount or category of the independent variable creating the specific situation under which the participants' scores on some other variable are measured is called a/an

Accepted Answer

A) independent variable. 
B) dependent variable. 
C) statistic. 
D) condition. 
A) independent variable. 
B) dependent variable. 
C) statistic. 
D) condition.

Question 11

Suppose you are interested in how participants behave in different color conditions.You select 30 participants and assign them to one of three rooms.The rooms differ only with respect to the color of the walls.One room is white, one is pale blue, and a third is bright red.Each participant is served a meal of a hamburger and french fries, and you then measure how long it takes them to finish eating.In this research, what is the dependent variable?

Accepted Answer

The dependent variab

Question 12

What is the scale of measurement involved in the statement, "My daughter is four years old."?

Accepted Answer

This is an

Question 13

In statistics a population is

Accepted Answer

A) the entire group to which a law of nature applies. 
B) a subset of a group to which a law of nature applies. 
C) all the people in the world. 
D) an infinite number that cannot be counted. 
A) the entire group to which a law of nature applies. 
B) a subset of a group to which a law of nature applies. 
C) all the people in the world. 
D) an infinite number that cannot be counted.

Question 14

Suppose you are interested in how participants perform under different temperature conditions.You select 30 participants and assign them to work in one of three rooms.The rooms differ only with respect to temperature.You instruct all participants to solve the same jigsaw puzzle, and then you measure how long it takes each one to finish.In this research, the experimenter is investigating whether

Accepted Answer

A) participants can solve a jigsaw puzzle in different rooms. 
B) participants can solve a jigsaw puzzle under different temperature conditions. 
C) the time required to solve a jigsaw puzzle depends on temperature. 
D) temperature depends on the time required to solve a jigsaw puzzle. 
A) participants can solve a jigsaw puzzle in different rooms. 
B) participants can solve a jigsaw puzzle under different temperature conditions. 
C) the time required to solve a jigsaw puzzle depends on temperature. 
D) temperature depends on the time required to solve a jigsaw puzzle.

Question 15

The variable measured as an experiment is being carried out is called the

Accepted Answer

A) independent variable. 
B) correlational variable. 
C) dependent variable. 
D) extraneous variable. 
A) independent variable. 
B) correlational variable. 
C) dependent variable. 
D) extraneous variable.

Question 16

"Based on a sample of 52 classrooms, our institution is using 12% less electricity than one year ago" is an example
of what type of statement?

Accepted Answer

The answer of "Based on a sample of 52 classrooms,...

Question 17

Symbols associated with different parameters come from the ________________alphabet.

Accepted Answer

A) Greek 
B) Hebrew 
C) Chinese 
D) German 
A) Greek 
B) Hebrew 
C) Chinese 
D) German

Question 18

"The average weight of students in the statistics class is 143 pounds" is an example of what type of statement?

Accepted Answer

The answer of "The average weight of students in the...

Question 19

A statistics class has 60% females and 40% males.A researcher selects a sample having 80% males and 20% females.Why should the researcher be cautious of making inferences about the entire class based on the sample?

Accepted Answer

A) Because the sample appears to be representative of the population. 
B) Because the sample appears to be unrepresentative of the population. 
C) Because the opinions of the females in the sample will not be the same as those of the females in the population. 
D) Because the sample was too small. 
A) Because the sample appears to be representative of the population. 
B) Because the sample appears to be unrepresentative of the population. 
C) Because the opinions of the females in the sample will not be the same as those of the females in the population. 
D) Because the sample was too small.

Question 20

If I want to summarize the characteristics of my statistics class to my friend, I should use

Accepted Answer

A) an experimental design. 
B) a correlational design. 
C) inferential statistics. 
D) descriptive statistics. 
A) an experimental design. 
B) a correlational design. 
C) inferential statistics. 
D) descriptive statistics.

The variable systematically changed or manipulated by a researcher in an experiment is called the

A relationship is not present when

For each variable, place a checkmark under the correct measurement scale and type.

Betty insists that ratio scales are the only measurement scales that contain the number 0.Is she correct?

Which of the following is not a purpose of statistical procedures?

Of the following data sets, which shows a relationship?

Which of the following is a variable?

A specific amount or category of the independent variable creating the specific situation under which the participants' scores on some other variable are measured is called a/an

What is the scale of measurement involved in the statement, "My daughter is four years old."?

In statistics a population is

The variable measured as an experiment is being carried out is called the

"Based on a sample of 52 classrooms, our institution is using 12% less electricity than one year ago" is an example of what type of statement?

Symbols associated with different parameters come from the ________________alphabet.

"The average weight of students in the statistics class is 143 pounds" is an example of what type of statement?

A statistics class has 60% females and 40% males.A researcher selects a sample having 80% males and 20% females.Why should the researcher be cautious of making inferences about the entire class based on the sample?

If I want to summarize the characteristics of my statistics class to my friend, I should use

Creating and Using Frequency Distributions

Summarizing Scores With Measures of Central Tendency

Summarizing Scores With Measures of Variability

Describing Data With Z-Scores and the Normal Curve

Using Probability to Make Decisions About Data

Overview of Statistical Hypothesis Testing: the Z-Test

Hypothesis Testing Using the One-Sample T-Test

Hypothesis Testing Using the Two-Sample T-Test

Describing Relationships Using Correlation and Regression

Hypothesis Testing Using the One-Way Analysis of Variance

Understanding the Two-Way Analysis of Variance

Chi Square and Nonparametric Procedures

Filters

Exam 1: Introduction to Statistics and Research

The variable systematically changed or manipulated by a researcher in an experiment is called the

A relationship is not present when

For each variable, place a checkmark under the correct measurement scale and type.

Betty insists that ratio scales are the only measurement scales that contain the number 0.Is she correct?

Which of the following is not a purpose of statistical procedures?

Of the following data sets, which shows a relationship?

Which of the following is a variable?

A specific amount or category of the independent variable creating the specific situation under which the participants' scores on some other variable are measured is called a/an

What is the scale of measurement involved in the statement, "My daughter is four years old."?

In statistics a population is

The variable measured as an experiment is being carried out is called the

"Based on a sample of 52 classrooms, our institution is using 12% less electricity than one year ago" is an example of what type of statement?

Symbols associated with different parameters come from the ________________alphabet.

"The average weight of students in the statistics class is 143 pounds" is an example of what type of statement?

A statistics class has 60% females and 40% males.A researcher selects a sample having 80% males and 20% females.Why should the researcher be cautious of making inferences about the entire class based on the sample?

If I want to summarize the characteristics of my statistics class to my friend, I should use

Creating and Using Frequency Distributions

Summarizing Scores With Measures of Central Tendency

Summarizing Scores With Measures of Variability

Describing Data With Z-Scores and the Normal Curve

Using Probability to Make Decisions About Data

Overview of Statistical Hypothesis Testing: the Z-Test

Hypothesis Testing Using the One-Sample T-Test

Hypothesis Testing Using the Two-Sample T-Test

Describing Relationships Using Correlation and Regression

Hypothesis Testing Using the One-Way Analysis of Variance

Understanding the Two-Way Analysis of Variance

Chi Square and Nonparametric Procedures

Filters