Question 1

A population has SS = 100 and F1F1F1S1F1F1F102 = 4.What is the value of F1F1F1S1F1F1F10(X - F1F1F1S1F1F1F10)for the population?

Accepted Answer

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

Question 2

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  False

Question 3

If the population variance is 4,then the standard deviation will be σ = 16.

Accepted Answer

A) True 
 B)False  False

Question 4

After a researcher adds 5 points to every score in a sample,the standard deviation is found to be s = 10.The original sample had a standard deviation of s = 5.

Accepted Answer

A) True 
 B)False

Question 5

To calculate the variance for a population,SS is divided by N.

Accepted Answer

A) True 
 B)False

Question 6

On an exam with a mean of μ = 70,you have a score of X = 75.Which of the following values for the standard deviation would give you the highest position within the class?

Accepted Answer

A) σ = 1 
B) σ = 5 
C) σ = 10 
D) Cannot determine from the information given 
A) σ = 1 
B) σ = 5 
C) σ = 10 
D) Cannot determine from the information given

Question 7

What is the range for the following set of scores? Scores: 5,7,9,15

Accepted Answer

A) 4 points 
B) 5 points 
C) 10 or 11 points 
D) 15 points 
A) 4 points 
B) 5 points 
C) 10 or 11 points 
D) 15 points

Question 8

What are the values for SS and variance for the following sample of n = 3 scores? Sample: 1,4,7

Accepted Answer

A) SS = 18 and variance = 6 
B) SS = 18 and variance = 9 
C) SS = 66 and variance = 22 
D) SS = 66 and variance = 33 
A) SS = 18 and variance = 6 
B) SS = 18 and variance = 9 
C) SS = 66 and variance = 22 
D) SS = 66 and variance = 33

Question 9

Multiplying every score in a sample by 3 will not change the value of the standard deviation.

Accepted Answer

A) True 
 B)False

Question 10

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

Accepted Answer

SS = 3,σ² =

Question 11

If the population variance is 5,then the population standard deviation is σ = 25.

Accepted Answer

A) True 
 B)False

Question 12

A sample of n = 9 scores has a variance of s2 = 18.If the scores were a population,what value would be obtained for the population variance.

Accepted Answer

A) F1F1F1S1F1F1F102 = 14 
B) F1F1F1S1F1F1F102 = 16 
C) F1F1F1S1F1F1F102 = 24 
D) F1F1F1S1F1F1F102 = 144 
A) F1F1F1S1F1F1F102 = 14 
B) F1F1F1S1F1F1F102 = 16 
C) F1F1F1S1F1F1F102 = 24 
D) F1F1F1S1F1F1F102 = 144

Question 13

A population of N = 10 scores has a standard deviation of F1F1F1S1F1F1F10 = 2.What is the value of SS,the sum of the squared deviations,for this population?

Accepted Answer

A) 40 
B) 20 
C) 4 
D) 2 
A) 40 
B) 20 
C) 4 
D) 2

Question 14

A sample of n = 8 scores has SS = 50.If these same scores were a population,then the SS value for the population would be _____.

Accepted Answer

A) 50 
B) greater than 50 
C) less than 50 
D) impossible to determine without additional information 
A) 50 
B) greater than 50 
C) less than 50 
D) impossible to determine without additional information

Question 15

What is the value of SS for the following set of scores? Scores: 0,1,4,5

Accepted Answer

A) 17 
B) 18 
C) 42 
D) Cannot answer without knowing whether it is a sample or a population 
A) 17 
B) 18 
C) 42 
D) Cannot answer without knowing whether it is a sample or a population

Question 16

On an exam with a mean of μ = 70,you have a score of X = 65.Which of the following values for the standard deviation would give you the highest position within the class?

Accepted Answer

A) σ = 1 
B) σ = 5 
C) σ = 10 
D) Cannot determine from the information given 
A) σ = 1 
B) σ = 5 
C) σ = 10 
D) Cannot determine from the information given

Question 17

What is the value of SS for the following set of scores? Scores: 8,3,1.

Accepted Answer

A) 26 
B) 29 
C) 74 
D) 144 
A) 26 
B) 29 
C) 74 
D) 144

Question 18

What is the value of SS (sum of squared deviations)for the following population? Population: 2,3,0,5

Accepted Answer

A) 13 
B) 38 
C) 13/4 = 3.25 
D) 38/4 = 9.50 
A) 13 
B) 38 
C) 13/4 = 3.25 
D) 38/4 = 9.50

Question 19

If you have a score of X = 76 on an exam with F1F1F1S1F1F1F10 = 70,you should expect a better grade if σ = 10 than if σ = 5.

Accepted Answer

A) True 
 B)False

Question 20

Calculate the variance and the standard deviation for the following sample data.Scores: 1,0,3,1,2,4,0,1

Accepted Answer

s² = 2 and

A population has SS = 100 and ² = 4.What is the value of (X - )for the population?

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

If the population variance is 4,then the standard deviation will be σ = 16.

After a researcher adds 5 points to every score in a sample,the standard deviation is found to be s = 10.The original sample had a standard deviation of s = 5.

To calculate the variance for a population,SS is divided by N.

On an exam with a mean of μ = 70,you have a score of X = 75.Which of the following values for the standard deviation would give you the highest position within the class?

What is the range for the following set of scores? Scores: 5,7,9,15

What are the values for SS and variance for the following sample of n = 3 scores? Sample: 1,4,7

Multiplying every score in a sample by 3 will not change the value of the standard deviation.

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

If the population variance is 5,then the population standard deviation is σ = 25.

A sample of n = 9 scores has a variance of s² = 18.If the scores were a population,what value would be obtained for the population variance.

A population of N = 10 scores has a standard deviation of  = 2.What is the value of SS,the sum of the squared deviations,for this population?

A sample of n = 8 scores has SS = 50.If these same scores were a population,then the SS value for the population would be _____.

What is the value of SS for the following set of scores? Scores: 0,1,4,5

On an exam with a mean of μ = 70,you have a score of X = 65.Which of the following values for the standard deviation would give you the highest position within the class?

What is the value of SS for the following set of scores? Scores: 8,3,1.

What is the value of SS (sum of squared deviations)for the following population? Population: 2,3,0,5

If you have a score of X = 76 on an exam with  = 70,you should expect a better grade if σ = 10 than if σ = 5.

Calculate the variance and the standard deviation for the following sample data.Scores: 1,0,3,1,2,4,0,1

Introduction to Statistics

Frequency Distributions

Measures of Central Tendency

Z-Scores

Probability

Probability and Samples:

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 Anova

Correlation and Regression

Chi-Square Tests

Filters

Exam 4: Measures of Variability

A population has SS = 100 and 2 = 4.What is the value of (X - )for the population?

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

If the population variance is 4,then the standard deviation will be σ = 16.

After a researcher adds 5 points to every score in a sample,the standard deviation is found to be s = 10.The original sample had a standard deviation of s = 5.

To calculate the variance for a population,SS is divided by N.

On an exam with a mean of μ = 70,you have a score of X = 75.Which of the following values for the standard deviation would give you the highest position within the class?

What is the range for the following set of scores? Scores: 5,7,9,15

What are the values for SS and variance for the following sample of n = 3 scores? Sample: 1,4,7

Multiplying every score in a sample by 3 will not change the value of the standard deviation.

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

If the population variance is 5,then the population standard deviation is σ = 25.

A sample of n = 9 scores has a variance of s2 = 18.If the scores were a population,what value would be obtained for the population variance.

A population of N = 10 scores has a standard deviation of  = 2.What is the value of SS,the sum of the squared deviations,for this population?

A sample of n = 8 scores has SS = 50.If these same scores were a population,then the SS value for the population would be _____.

What is the value of SS for the following set of scores? Scores: 0,1,4,5

On an exam with a mean of μ = 70,you have a score of X = 65.Which of the following values for the standard deviation would give you the highest position within the class?

What is the value of SS for the following set of scores? Scores: 8,3,1.

What is the value of SS (sum of squared deviations)for the following population? Population: 2,3,0,5

If you have a score of X = 76 on an exam with  = 70,you should expect a better grade if σ = 10 than if σ = 5.

Calculate the variance and the standard deviation for the following sample data.Scores: 1,0,3,1,2,4,0,1

Introduction to Statistics

Frequency Distributions

Measures of Central Tendency

Z-Scores

Probability

Probability and Samples:

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 Anova

Correlation and Regression

Chi-Square Tests

Filters

A population has SS = 100 and ² = 4.What is the value of (X - )for the population?

A sample of n = 9 scores has a variance of s² = 18.If the scores were a population,what value would be obtained for the population variance.