Question 1

A high school gym teacher records how much time each student requires to complete a one-mile run.This is an example of measuring a continuous variable.

Accepted Answer

A) True 
 B)False  True

Question 2

In an introductory theater class, the professor records each student's favorite movie from the previous year.The teacher is measuring a discrete variable.

Accepted Answer

A) True 
 B)False  True

Question 3

What is the value of Σ(X - 2) for the following scores? Scores: 2, 3, 5

Accepted Answer

A) 4 
B) 6 
C) 8 
D) 10 
A) 4 
B) 6 
C) 8 
D) 10 A

Question 4

What is the value of ΣX + 1 for the following scores?

Accepted Answer

A) 8 
B) 10 Scores: 1, 0, 2, 4 
C) 11 
D) 14 
A) 8 
B) 10 Scores: 1, 0, 2, 4 
C) 11 
D) 14

Question 5

Statistical methods that organize, summarize, or simplify data are called _______.

Accepted Answer

A) parameters 
B) statistics 
C) descriptive statistics 
D) inferential statistics 
A) parameters 
B) statistics 
C) descriptive statistics 
D) inferential statistics

Question 6

A researcher uses an anonymous survey to investigate the study habits of American college students.The entire group of American college students is an example of a(n) _________.

Accepted Answer

A) sample 
B) statistic 
C) population 
D) parameter 
A) sample 
B) statistic 
C) population 
D) parameter

Question 7

A recent study reports that elementary school students who were given a nutritious breakfast each morning had higher test scores than students who did not receive the breakfast.For this study, what is the independent variable?

Accepted Answer

A) the students who were given the nutritious breakfast 
B) the students who were not given the nutritious breakfast 
C) whether or not a breakfast was given to the students 
D) the test scores for the students 
A) the students who were given the nutritious breakfast 
B) the students who were not given the nutritious breakfast 
C) whether or not a breakfast was given to the students 
D) the test scores for the students

Question 8

The goal for an experiment is to demonstrate that changes in one variable are responsible for causing changes in a second variable.

Accepted Answer

A) True 
 B)False

Question 9

You are instructed to subtract four points from each score and find the sum of the resulting values.How would this set of instructions be expressed in summation notation?

Accepted Answer

A) ΣX - 4 
B) Σ (X - 4) 
C) 4 - ΣX 
D) Σ(4 - X) 
A) ΣX - 4 
B) Σ (X - 4) 
C) 4 - ΣX 
D) Σ(4 - X)

Question 10

What additional information is obtained by measuring two individuals on an interval scale compared to a ordinal scale?

Accepted Answer

A) whether the measurements are the same or different 
B) the direction of the difference 
C) the size of the difference 
D) none of the other options is correct 
A) whether the measurements are the same or different 
B) the direction of the difference 
C) the size of the difference 
D) none of the other options is correct

Question 11

The relationship between a statistic and a parameter is the same as the relationship between ______.

Accepted Answer

A) a sample and a population. 
B) a statistic and a parameter. 
C) a parameter and a population 
D) descriptive statistics and inferential statistics. 
A) a sample and a population. 
B) a statistic and a parameter. 
C) a parameter and a population 
D) descriptive statistics and inferential statistics.

Question 12

What is the value of Σ(X - 2 )2 for the following scores? Scores: 2, 3, 5

Accepted Answer

A) 8 
B) 10 
C) 16 
D) 36 
A) 8 
B) 10 
C) 16 
D) 36

Question 13

Recording the number of students who are absent each day at a high school would be an example of measuring a discrete variable.

Accepted Answer

A) True 
 B)False

Question 14

For the following scores, Σ(X + 1) = 9.Scores: 1, 3, 0, 1

Accepted Answer

A) True 
 B)False

Question 15

For statistical purposes, there usually is not much difference between scores from an interval scale and scores from a ratio scale.

Accepted Answer

A) True 
 B)False

Question 16

What is the value of Σ(X + 1) for the following scores?

Accepted Answer

A) 4 
B) 6 Scores: 1, 0, 1, 4 
C) 7 
D) 10 
A) 4 
B) 6 Scores: 1, 0, 1, 4 
C) 7 
D) 10

Question 17

To compute (ΣX)2, you first add the scores, then square the total.

Accepted Answer

A) True 
 B)False

Question 18

A correlational study is used to examine the relationship between two variables but cannot determine whether it is a cause-and-effect relationship.

Accepted Answer

A) True 
 B)False

Question 19

Although a research study is typically conducted with a relatively small group of participants known as a _________, most researchers hope to generalize their results to a much larger group known as a _________.

Accepted Answer

A) sample, population 
B) statistic, sample 
C) population, sample 
D) parameter, population 
A) sample, population 
B) statistic, sample 
C) population, sample 
D) parameter, population

Question 20

A researcher conducts an experiment to determine whether moderate doses of St.Johns Wort have any effect of memory for college students.For this study, what is the independent variable?

Accepted Answer

A) the amount of St.Johns Wort given to each participant 
B) the memory score for each participant 
C) the group of college students 
D) cannot answer without more information 
A) the amount of St.Johns Wort given to each participant 
B) the memory score for each participant 
C) the group of college students 
D) cannot answer without more information

A high school gym teacher records how much time each student requires to complete a one-mile run.This is an example of measuring a continuous variable.

In an introductory theater class, the professor records each student's favorite movie from the previous year.The teacher is measuring a discrete variable.

What is the value of Σ(X - 2) for the following scores? Scores: 2, 3, 5

What is the value of ΣX + 1 for the following scores?

Statistical methods that organize, summarize, or simplify data are called _______.

A researcher uses an anonymous survey to investigate the study habits of American college students.The entire group of American college students is an example of a(n) _________.

A recent study reports that elementary school students who were given a nutritious breakfast each morning had higher test scores than students who did not receive the breakfast.For this study, what is the independent variable?

The goal for an experiment is to demonstrate that changes in one variable are responsible for causing changes in a second variable.

You are instructed to subtract four points from each score and find the sum of the resulting values.How would this set of instructions be expressed in summation notation?

What additional information is obtained by measuring two individuals on an interval scale compared to a ordinal scale?

The relationship between a statistic and a parameter is the same as the relationship between ______.

What is the value of Σ(X - 2 )² for the following scores? Scores: 2, 3, 5

Recording the number of students who are absent each day at a high school would be an example of measuring a discrete variable.

For the following scores, Σ(X + 1) = 9.Scores: 1, 3, 0, 1

For statistical purposes, there usually is not much difference between scores from an interval scale and scores from a ratio scale.

What is the value of Σ(X + 1) for the following scores?

To compute (ΣX)², you first add the scores, then square the total.

A correlational study is used to examine the relationship between two variables but cannot determine whether it is a cause-and-effect relationship.

Although a research study is typically conducted with a relatively small group of participants known as a _, most researchers hope to generalize their results to a much larger group known as a _.

A researcher conducts an experiment to determine whether moderate doses of St.Johns Wort have any effect of memory for college students.For this study, what is the independent variable?

Frequency Distributions

Central Tendency

Variability

Z-Scores

Probability

The Distribution of Sample Means

Introduction to Hypothesis Testing

Introduction to the T Statistic

The T Test for Two Independent Samples

The T Test for Two Related Samples

Introduction to Analysis of Variance

Repeated-Measures Anova

Two-Factor Analysis of Variance

Correlation

Introduction to Regression

Chi-Square Tests

The Binomial Test

Choosing the Right Statistics

Filters

Exam 1: Introduction to Statistics

A high school gym teacher records how much time each student requires to complete a one-mile run.This is an example of measuring a continuous variable.

In an introductory theater class, the professor records each student's favorite movie from the previous year.The teacher is measuring a discrete variable.

What is the value of Σ(X - 2) for the following scores? Scores: 2, 3, 5

What is the value of ΣX + 1 for the following scores?

Statistical methods that organize, summarize, or simplify data are called _______.

A researcher uses an anonymous survey to investigate the study habits of American college students.The entire group of American college students is an example of a(n) _________.

A recent study reports that elementary school students who were given a nutritious breakfast each morning had higher test scores than students who did not receive the breakfast.For this study, what is the independent variable?

The goal for an experiment is to demonstrate that changes in one variable are responsible for causing changes in a second variable.

You are instructed to subtract four points from each score and find the sum of the resulting values.How would this set of instructions be expressed in summation notation?

What additional information is obtained by measuring two individuals on an interval scale compared to a ordinal scale?

The relationship between a statistic and a parameter is the same as the relationship between ______.

What is the value of Σ(X - 2 )2 for the following scores? Scores: 2, 3, 5

Recording the number of students who are absent each day at a high school would be an example of measuring a discrete variable.

For the following scores, Σ(X + 1) = 9.Scores: 1, 3, 0, 1

For statistical purposes, there usually is not much difference between scores from an interval scale and scores from a ratio scale.

What is the value of Σ(X + 1) for the following scores?

To compute (ΣX)2, you first add the scores, then square the total.

A correlational study is used to examine the relationship between two variables but cannot determine whether it is a cause-and-effect relationship.

Although a research study is typically conducted with a relatively small group of participants known as a _________, most researchers hope to generalize their results to a much larger group known as a _________.

A researcher conducts an experiment to determine whether moderate doses of St.Johns Wort have any effect of memory for college students.For this study, what is the independent variable?

Frequency Distributions

Central Tendency

Variability

Z-Scores

Probability

The Distribution of Sample Means

Introduction to Hypothesis Testing

Introduction to the T Statistic

The T Test for Two Independent Samples

The T Test for Two Related Samples

Introduction to Analysis of Variance

Repeated-Measures Anova

Two-Factor Analysis of Variance

Correlation

Introduction to Regression

Chi-Square Tests

The Binomial Test

Choosing the Right Statistics

Filters

What is the value of Σ(X - 2 )² for the following scores? Scores: 2, 3, 5

To compute (ΣX)², you first add the scores, then square the total.

Although a research study is typically conducted with a relatively small group of participants known as a _, most researchers hope to generalize their results to a much larger group known as a _.