Question 1

For a population of N = 4 scores with ΣX = 10 and ΣX2 = 30,SS = 5.​

Accepted Answer

A) True 
 B)False

Question 2

If the scores in a population range from a low of X = 5 to a high of X = 14,then the population standard deviation must be less than 15.​

Accepted Answer

A) True 
 B)False

Question 3

A sample of n = 25 scores is selected from a population with a variance of σ2 = 16.The sample variance will be smaller than 16.​

Accepted Answer

A) True 
 B)False

Question 4

A positive deviation always indicates a score that is less than the mean.​

Accepted Answer

A) True 
 B)False

Question 5

For the following sample,use the computational formula to calculate SS.Then,compute the sample variance and standard deviation.​Scores: 1,3,1,1

Accepted Answer

ΣX = 6 and

Question 6

For a population with µ = 70 and σ = 5,about 95% of the individuals will have scores between X = 65 and X = 75.​

Accepted Answer

A) True 
 B)False

Question 7

Calculate the variance and the standard deviation for the following sample data.Scores: 10,7,9,1,2,0,6​

Accepted Answer

SS = 96; s

Question 8

What is the value of SS (sum of squared deviations)for the following sample? Sample: 2,3,4,7​

Accepted Answer

A) ​14/3 = 2.67 
B) ​14 
C) ​72 
D) ​28 
A) ​14/3 = 2.67 
B) ​14 
C) ​72 
D) ​28

Question 9

A population has sum of squared deviations,SS = 100 and variance,s2 = 4.What is the value of S(X - m)for the population?​

Accepted Answer

A) ​0 
B) ​25 
C) ​100 
D) ​400 
A) ​0 
B) ​25 
C) ​100 
D) ​400

Question 10

A population of N = 5 scores has ΣX = 20 and ΣX2 = 100.For this population,what is the value of SS (sum of squared deviations)?​

Accepted Answer

A) ​20 
B) ​80 
C) ​100 
D) ​380 
A) ​20 
B) ​80 
C) ​100 
D) ​380

Question 11

To calculate the variance for a sample,SS is divided by df = n - 1.​

Accepted Answer

A) True 
 B)False

Question 12

For a sample of n = 6 scores with ΣX = 30 and ΣX2 = 200,SS = 20.​

Accepted Answer

A) True 
 B)False

Question 13

What is the value of SS (sum of squared deviations)for the following population?Population: 1,1,1,5​

Accepted Answer

A) ​3 
B) ​7 
C) ​12 
D) ​28 
A) ​3 
B) ​7 
C) ​12 
D) ​28

Question 14

A set of 10 scores has SS = 90.If the scores are a sample,the sample variance is ____ and if the scores are a population,the population variance is ____.​

Accepted Answer

A) ​s2 = 9; σ2 = 9 
B) ​s2 = 9; σ2 = 10 
C) ​s2 = 10; σ2 = 9 
D) ​s2 = 10; σ2 = 10 
A) ​s2 = 9; σ2 = 9 
B) ​s2 = 9; σ2 = 10 
C) ​s2 = 10; σ2 = 9 
D) ​s2 = 10; σ2 = 10

Question 15

The smallest score in a population is X = 5 and the largest score is X = 10.Based on this information,you can conclude that the____.​

Accepted Answer

A) ​mean is greater than 10 
B) ​standard deviation is smaller than 5 
C) ​standard deviation is less than 6 
D) ​standard deviation is greater than 6 
A) ​mean is greater than 10 
B) ​standard deviation is smaller than 5 
C) ​standard deviation is less than 6 
D) ​standard deviation is greater than 6

For a population of N = 4 scores with ΣX = 10 and ΣX² = 30,SS = 5.

If the scores in a population range from a low of X = 5 to a high of X = 14,then the population standard deviation must be less than 15.

A sample of n = 25 scores is selected from a population with a variance of σ2 = 16.The sample variance will be smaller than 16.

A positive deviation always indicates a score that is less than the mean.

For the following sample,use the computational formula to calculate SS.Then,compute the sample variance and standard deviation.Scores: 1,3,1,1

For a population with µ = 70 and σ = 5,about 95% of the individuals will have scores between X = 65 and X = 75.

Calculate the variance and the standard deviation for the following sample data.Scores: 10,7,9,1,2,0,6

What is the value of SS (sum of squared deviations)for the following sample? Sample: 2,3,4,7

A population has sum of squared deviations,SS = 100 and variance,s2 = 4.What is the value of S(X - m)for the population?

A population of N = 5 scores has ΣX = 20 and ΣX2 = 100.For this population,what is the value of SS (sum of squared deviations)?

To calculate the variance for a sample,SS is divided by df = n - 1.

For a sample of n = 6 scores with ΣX = 30 and ΣX² = 200,SS = 20.

What is the value of SS (sum of squared deviations)for the following population?Population: 1,1,1,5

A set of 10 scores has SS = 90.If the scores are a sample,the sample variance is and if the scores are a population,the population variance is .

The smallest score in a population is X = 5 and the largest score is X = 10.Based on this information,you can conclude that the____.

Introduction to Statistics

Frequency Distributions

Central Tendency

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 Analysis of Variance Anova

Two-Factor Analysis of Variance Independent Measures

Correlation

Introduction to Regression

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

The Binomial Test

Filters

Exam 4: Variability

For a population of N = 4 scores with ΣX = 10 and ΣX2 = 30,SS = 5.​

If the scores in a population range from a low of X = 5 to a high of X = 14,then the population standard deviation must be less than 15.​

A sample of n = 25 scores is selected from a population with a variance of σ2 = 16.The sample variance will be smaller than 16.​

A positive deviation always indicates a score that is less than the mean.​

For the following sample,use the computational formula to calculate SS.Then,compute the sample variance and standard deviation.​Scores: 1,3,1,1

For a population with µ = 70 and σ = 5,about 95% of the individuals will have scores between X = 65 and X = 75.​

Calculate the variance and the standard deviation for the following sample data.Scores: 10,7,9,1,2,0,6​

What is the value of SS (sum of squared deviations)for the following sample? Sample: 2,3,4,7​

A population has sum of squared deviations,SS = 100 and variance,s2 = 4.What is the value of S(X - m)for the population?​

A population of N = 5 scores has ΣX = 20 and ΣX2 = 100.For this population,what is the value of SS (sum of squared deviations)?​

To calculate the variance for a sample,SS is divided by df = n - 1.​

For a sample of n = 6 scores with ΣX = 30 and ΣX2 = 200,SS = 20.​

What is the value of SS (sum of squared deviations)for the following population?Population: 1,1,1,5​

A set of 10 scores has SS = 90.If the scores are a sample,the sample variance is ____ and if the scores are a population,the population variance is ____.​

The smallest score in a population is X = 5 and the largest score is X = 10.Based on this information,you can conclude that the____.​

Introduction to Statistics

Frequency Distributions

Central Tendency

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 Analysis of Variance Anova

Two-Factor Analysis of Variance Independent Measures

Correlation

Introduction to Regression

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

The Binomial Test

Filters

For a population of N = 4 scores with ΣX = 10 and ΣX² = 30,SS = 5.

If the scores in a population range from a low of X = 5 to a high of X = 14,then the population standard deviation must be less than 15.

A sample of n = 25 scores is selected from a population with a variance of σ2 = 16.The sample variance will be smaller than 16.

A positive deviation always indicates a score that is less than the mean.

For the following sample,use the computational formula to calculate SS.Then,compute the sample variance and standard deviation.Scores: 1,3,1,1

For a population with µ = 70 and σ = 5,about 95% of the individuals will have scores between X = 65 and X = 75.

Calculate the variance and the standard deviation for the following sample data.Scores: 10,7,9,1,2,0,6

What is the value of SS (sum of squared deviations)for the following sample? Sample: 2,3,4,7

A population has sum of squared deviations,SS = 100 and variance,s2 = 4.What is the value of S(X - m)for the population?

A population of N = 5 scores has ΣX = 20 and ΣX2 = 100.For this population,what is the value of SS (sum of squared deviations)?

To calculate the variance for a sample,SS is divided by df = n - 1.

For a sample of n = 6 scores with ΣX = 30 and ΣX² = 200,SS = 20.

What is the value of SS (sum of squared deviations)for the following population?Population: 1,1,1,5

A set of 10 scores has SS = 90.If the scores are a sample,the sample variance is and if the scores are a population,the population variance is .

The smallest score in a population is X = 5 and the largest score is X = 10.Based on this information,you can conclude that the____.