Question 1

A population of N = 10 scores has a mean of μ = 6.After one score is removed, the mean is found to be M = 5.What is the value of the score that was removed?

Accepted Answer

A) X = 10 
B) X = 5 
C) X = 3 
D) X = 15 
A) X = 10 
B) X = 5 
C) X = 3 
D) X = 15

Question 2

A sample of n = 5 scores has a mean of M = 8.One new score is added to the sample and the new mean is calculated to be M = 9.What is the value of new score?

Accepted Answer

A) X = 5 
B) X = 9 
C) X = 14 
D) X = 54 
A) X = 5 
B) X = 9 
C) X = 14 
D) X = 54

Question 3

A sample of n = 6 scores has ΣX = 48.This sample has a mean of M = 8.

Accepted Answer

A) True 
 B)False

Question 4

A distribution of scores has a mean of μ = 50.One new score is added to the distribution and the new mean is found to be μ = 48.From this result you can conclude that the new score was _____.

Accepted Answer

A) greater than 50 
B) less than 50 
C) equal to 48 
D) cannot answer from the information given 
A) greater than 50 
B) less than 50 
C) equal to 48 
D) cannot answer from the information given

Question 5

What is the mean for the following scores? Scores: 1, 6, 14

Accepted Answer

A) 3 
B) 6 
C) 7 
D) 10.5 
A) 3 
B) 6 
C) 7 
D) 10.5

Question 6

A sample has n = 7 scores with a mean of M = 7.If one individual with a score of
X = 1 is removed from the sample, the new mean will be M = 8.

Accepted Answer

A) True 
 B)False

Question 7

It is possible to have a distribution of scores where no individual has a score exactly equal to the mode.

Accepted Answer

A) True 
 B)False

Question 8

One sample has n = 4 scores and M = 10.A second sample has n = 6 scores and M = 5.If the two samples are combined, then what is the mean for the combined sample?

Accepted Answer

A) 70/4 = 17.5 
B) 70/6 = 11.67 
C) 70/10 = 7 
D) cannot be determined with the information given 
A) 70/4 = 17.5 
B) 70/6 = 11.67 
C) 70/10 = 7 
D) cannot be determined with the information given

Question 9

A population of N = 6 scores has ΣX = 30.What is the population mean?

Accepted Answer

A) 180 
B) 30 
C) 15 
D) 5 
A) 180 
B) 30 
C) 15 
D) 5

Question 10

A sample has a mean of M = 40.If a new score of X = 55 is added to the sample, then the sample mean would increase.

Accepted Answer

A) True 
 B)False

A population of N = 10 scores has a mean of μ = 6.After one score is removed, the mean is found to be M = 5.What is the value of the score that was removed?

A sample of n = 5 scores has a mean of M = 8.One new score is added to the sample and the new mean is calculated to be M = 9.What is the value of new score?

A sample of n = 6 scores has ΣX = 48.This sample has a mean of M = 8.

A distribution of scores has a mean of μ = 50.One new score is added to the distribution and the new mean is found to be μ = 48.From this result you can conclude that the new score was _____.

What is the mean for the following scores? Scores: 1, 6, 14

A sample has n = 7 scores with a mean of M = 7.If one individual with a score of X = 1 is removed from the sample, the new mean will be M = 8.

It is possible to have a distribution of scores where no individual has a score exactly equal to the mode.

One sample has n = 4 scores and M = 10.A second sample has n = 6 scores and M = 5.If the two samples are combined, then what is the mean for the combined sample?

A population of N = 6 scores has ΣX = 30.What is the population mean?

A sample has a mean of M = 40.If a new score of X = 55 is added to the sample, then the sample mean would increase.

Introduction to Statistics

Frequency Distributions

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 3: Central Tendency

A population of N = 10 scores has a mean of μ = 6.After one score is removed, the mean is found to be M = 5.What is the value of the score that was removed?

A sample of n = 5 scores has a mean of M = 8.One new score is added to the sample and the new mean is calculated to be M = 9.What is the value of new score?

A sample of n = 6 scores has ΣX = 48.This sample has a mean of M = 8.

A distribution of scores has a mean of μ = 50.One new score is added to the distribution and the new mean is found to be μ = 48.From this result you can conclude that the new score was _____.

What is the mean for the following scores? Scores: 1, 6, 14

A sample has n = 7 scores with a mean of M = 7.If one individual with a score of X = 1 is removed from the sample, the new mean will be M = 8.

It is possible to have a distribution of scores where no individual has a score exactly equal to the mode.

One sample has n = 4 scores and M = 10.A second sample has n = 6 scores and M = 5.If the two samples are combined, then what is the mean for the combined sample?

A population of N = 6 scores has ΣX = 30.What is the population mean?

A sample has a mean of M = 40.If a new score of X = 55 is added to the sample, then the sample mean would increase.

Introduction to Statistics

Frequency Distributions

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