Question 1

What is the value of Σ(X + 1)for the scores 2,4,7?

Accepted Answer

A) 10 
B) 11 
C) 13 
D) 16 
A) 10 
B) 11 
C) 13 
D) 16 D

Question 2

What is the value of Σ(X - 1)² for the scores 1,2,1,4?

Accepted Answer

A) 10 
B) 16 
C) 36 
D) 49 
A) 10 
B) 16 
C) 36 
D) 49 A

Question 3

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 4

Classifying people into two groups on the basis of gender is an example of measurement on an ordinal scale.

Accepted Answer

A) True 
 B)False

Question 5

A discrete variable must be measured on a nominal or an ordinal scale.

Accepted Answer

A) True 
 B)False

Question 6

A data set is described as consisting of n = 15 scores.Based on the notation being used,the data set is a sample.

Accepted Answer

A) True 
 B)False

Question 7

What additional information is obtained by measuring two individuals on an ordinal scale compared to a nominal 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 8

What additional information is obtained by measuring two individuals on an interval scale compared to an 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 9

Describe the sequence of mathematical operations that would be used to evaluate each of the following expressions:
a.ΣX²
b.(ΣX)²
c.ΣX - 2
d.Σ(X - 2)
e.Σ(X - 2)²

Accepted Answer

a.Square each score,then sum the squared

Question 10

A recent study found a correlation between gum disease and heart disease.This result indicates that gum disease causes people to develop heart disease.

Accepted Answer

A) True 
 B)False

Question 11

After measuring two individuals,a researcher can say that Tom's score is 4 points higher than Bill's.The measurements must come from a(n)_______ scale.

Accepted Answer

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

Question 12

For the following scores,Σ(X + 1)² = 81.Scores: 1,3,0,1

Accepted Answer

A) True 
 B)False

Question 13

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 14

For the following scores,ΣX² = (ΣX)².Scores: 1,1,1,1

Accepted Answer

A) True 
 B)False

Question 15

A recent report concluded that college graduates have higher life-satisfaction scores than individuals who do not receive college degrees.For this study,graduating versus not graduating is an example of a quasi-independent variable.

Accepted Answer

A) True 
 B)False

Question 16

Using the average score to describe a sample is an example of inferential statistics.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is an example of a discrete variable?

Accepted Answer

A) The age of each student in a psychology class 
B) The gender of each student in a psychology class 
C) The amount of time to solve a problem 
D) The amount of weight gained for each freshman at a local college 
A) The age of each student in a psychology class 
B) The gender of each student in a psychology class 
C) The amount of time to solve a problem 
D) The amount of weight gained for each freshman at a local college

Question 18

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

Accepted Answer

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

Question 19

A researcher is interested in the average income for registered voters in the United States.The entire group of registered voters is an example of a population.

Accepted Answer

A) True 
 B)False

Question 20

A characteristic,usually a numerical value,which describes a sample is called a _______.

Accepted Answer

A) parameter 
B) statistic 
C) variable 
D) constant 
A) parameter 
B) statistic 
C) variable 
D) constant

What is the value of Σ(X + 1)for the scores 2,4,7?

What is the value of Σ(X - 1)² for the scores 1,2,1,4?

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.

Classifying people into two groups on the basis of gender is an example of measurement on an ordinal scale.

A discrete variable must be measured on a nominal or an ordinal scale.

A data set is described as consisting of n = 15 scores.Based on the notation being used,the data set is a sample.

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

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

Describe the sequence of mathematical operations that would be used to evaluate each of the following expressions: a.ΣX² b.(ΣX)² c.ΣX - 2 d.Σ(X - 2) e.Σ(X - 2)²

A recent study found a correlation between gum disease and heart disease.This result indicates that gum disease causes people to develop heart disease.

After measuring two individuals,a researcher can say that Tom's score is 4 points higher than Bill's.The measurements must come from a(n)_______ scale.

For the following scores,Σ(X + 1)² = 81.Scores: 1,3,0,1

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

For the following scores,ΣX² = (ΣX)².Scores: 1,1,1,1

A recent report concluded that college graduates have higher life-satisfaction scores than individuals who do not receive college degrees.For this study,graduating versus not graduating is an example of a quasi-independent variable.

Using the average score to describe a sample is an example of inferential statistics.

Which of the following is an example of a discrete variable?

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

A researcher is interested in the average income for registered voters in the United States.The entire group of registered voters is an example of a population.

A characteristic,usually a numerical value,which describes a sample is called a _______.

Frequency Distributions.

Central Tendency.

Variability.

z-Scores: Location of Scores and Standardized Distributions.

Probability.

Probability and Samples: 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 and Two-Factor Analysis of Variance

Correlation and Regression.

The Chi-Square Statistic: Tests for Goodness of Fit and Independence

Filters

Exam 1: Introduction to Statistics.

What is the value of Σ(X + 1)for the scores 2,4,7?

What is the value of Σ(X - 1)² for the scores 1,2,1,4?

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.

Classifying people into two groups on the basis of gender is an example of measurement on an ordinal scale.

A discrete variable must be measured on a nominal or an ordinal scale.

A data set is described as consisting of n = 15 scores.Based on the notation being used,the data set is a sample.

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

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

Describe the sequence of mathematical operations that would be used to evaluate each of the following expressions: a.ΣX² b.(ΣX)² c.ΣX - 2 d.Σ(X - 2) e.Σ(X - 2)²

A recent study found a correlation between gum disease and heart disease.This result indicates that gum disease causes people to develop heart disease.

After measuring two individuals,a researcher can say that Tom's score is 4 points higher than Bill's.The measurements must come from a(n)_______ scale.

For the following scores,Σ(X + 1)² = 81.Scores: 1,3,0,1

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

For the following scores,ΣX² = (ΣX)².Scores: 1,1,1,1

A recent report concluded that college graduates have higher life-satisfaction scores than individuals who do not receive college degrees.For this study,graduating versus not graduating is an example of a quasi-independent variable.

Using the average score to describe a sample is an example of inferential statistics.

Which of the following is an example of a discrete variable?

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

A researcher is interested in the average income for registered voters in the United States.The entire group of registered voters is an example of a population.

A characteristic,usually a numerical value,which describes a sample is called a _______.

Frequency Distributions.

Central Tendency.

Variability.

z-Scores: Location of Scores and Standardized Distributions.

Probability.

Probability and Samples: 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 and Two-Factor Analysis of Variance

Correlation and Regression.

The Chi-Square Statistic: Tests for Goodness of Fit and Independence

Filters