Question 1

A measure of variability provides information about the typical values of a variable.

Accepted Answer

A) True 
 B)False

Question 2

Which measure of variability is used the least by researchers?

Accepted Answer

A)  Average 
B)  Range 
C)  Standard deviation 
D)  Variance 
A)  Average 
B)  Range 
C)  Standard deviation 
D)  Variance

Question 3

Calculate the range, variance, and standard deviation.

Accepted Answer

To calculate the range, variance, and st

Question 4

What is an advantage of the mean as a measure of central tendency?

Accepted Answer

A)  It is not influenced by extreme scores 
B)  It is representative even when there is extreme skewness 
C)  It is the most precise measure of central tendency 
D)  It can be used with nominal variables 
A)  It is not influenced by extreme scores 
B)  It is representative even when there is extreme skewness 
C)  It is the most precise measure of central tendency 
D)  It can be used with nominal variables

Question 5

A simple regression equation includes what are called "partial regression coefficients."

Accepted Answer

A) True 
 B)False

Question 6

If everyone in your neighborhood had exactly the same income, the variance would be equal to zero.

Accepted Answer

A) True 
 B)False

Question 7

Compare and contrast simple and multiple regression.

Accepted Answer

Simple regression involves characterizin

Question 8

A measure of central tendency provides information about the variability within a distribution.

Accepted Answer

A) True 
 B)False

Question 9

Below are four sets of intervals for grouped frequency distributions. The data that they are based on has scores that range from 0 to 49. Only one set of intervals meets the necessary criteria for groupings. Pick the one that meets the criteria:

Accepted Answer

A)  40-49 30-39
20-29
10-19
0-9 
B)  40-49 30-39
20-29
10-19
1-9 
C)  40-49 30-40
20-30
10-20
0-9 
D)  30-40 20-30
10-20
0-10 
A)  40-49 30-39
20-29
10-19
0-9 
B)  40-49 30-39
20-29
10-19
1-9 
C)  40-49 30-40
20-30
10-20
0-9 
D)  30-40 20-30
10-20
0-10

Question 10

When the data tend to be homogeneous, the variance and standard deviation will tend to be larger.

Accepted Answer

A) True 
 B)False

Question 11

What is the difference between the regression coefficient in a simple regression and the regression coefficients in a multiple regression?

Accepted Answer

A)  The simple regression coefficient is always less than one 
B)  The multiple regression coefficients do not control for other independent variables 
C)  The simple regression coefficient does not control for other independent variables 
D)  There are no differences between simple and multiple regression 
A)  The simple regression coefficient is always less than one 
B)  The multiple regression coefficients do not control for other independent variables 
C)  The simple regression coefficient does not control for other independent variables 
D)  There are no differences between simple and multiple regression

Question 12

Examine the frequency distribution listed below. The variable is the number of in-service training classes teachers have attended over a two-year period. What is the mode for the number of in-service classes taken by the teachers?

Accepted Answer

A)  50 
B)  0 
C)  3 
D)  10 
A)  50 
B)  0 
C)  3 
D)  10

Question 13

A data point that is very atypical of the scores in a distribution is called:

Accepted Answer

A)  The mode 
B)  The median 
C)  An outlier 
D)  A variance 
A)  The mode 
B)  The median 
C)  An outlier 
D)  A variance

Question 14

Which of the following distributions is positively skewed?

Accepted Answer

A)    
B)    
C)    
A)    
B)    
C)

Question 15

In a frequency distribution, data values are put into intervals and the frequencies of the intervals are reported.

Accepted Answer

A) True 
 B)False

Question 16

Examine the following table. A researcher is interested in whether learning from instruction that includes video will be more likely to transfer (be applicable in new contexts) than learning that takes place with still photos or a written document. Is there a likely relationship between instructional group and transfer of learning?

Accepted Answer

A)  Yes 
B)  No 
A)  Yes 
B)  No

Question 17

What is the median of the following set of scores: 18, 6, 12, 10, 14?

Accepted Answer

A)  10 
B)  14 
C)  18 
D)  12 
A)  10 
B)  14 
C)  18 
D)  12

Question 18

Which statement below is true?

Accepted Answer

A)  Instructional group is unrelated to transfer of learning 
B)  The video group was three times more likely to transfer than the text group 
C)  The video group was less likely to transfer than the picture group 
D)  The text group was more likely to transfer than the picture group 
A)  Instructional group is unrelated to transfer of learning 
B)  The video group was three times more likely to transfer than the text group 
C)  The video group was less likely to transfer than the picture group 
D)  The text group was more likely to transfer than the picture group

Question 19

A contingency table is:

Accepted Answer

A)  A frequency distribution for a single variable 
B)  A table displaying information in cells formed by the intersection of two or more categorical variables 
C)  A table containing correlation coefficients 
D)  A normal curve representation of two variables 
A)  A frequency distribution for a single variable 
B)  A table displaying information in cells formed by the intersection of two or more categorical variables 
C)  A table containing correlation coefficients 
D)  A normal curve representation of two variables

Question 20

A table listing the values of a variable and their frequencies of occurrence is called:

Accepted Answer

A)  The standard deviation 
B)  A point estimate 
C)  A frequency distribution 
D)  A scatter plot 
A)  The standard deviation 
B)  A point estimate 
C)  A frequency distribution 
D)  A scatter plot

A measure of variability provides information about the typical values of a variable.

Which measure of variability is used the least by researchers?

Calculate the range, variance, and standard deviation.

What is an advantage of the mean as a measure of central tendency?

A simple regression equation includes what are called "partial regression coefficients."

If everyone in your neighborhood had exactly the same income, the variance would be equal to zero.

Compare and contrast simple and multiple regression.

A measure of central tendency provides information about the variability within a distribution.

Below are four sets of intervals for grouped frequency distributions. The data that they are based on has scores that range from 0 to 49. Only one set of intervals meets the necessary criteria for groupings. Pick the one that meets the criteria:

When the data tend to be homogeneous, the variance and standard deviation will tend to be larger.

What is the difference between the regression coefficient in a simple regression and the regression coefficients in a multiple regression?

Examine the frequency distribution listed below. The variable is the number of in-service training classes teachers have attended over a two-year period. What is the mode for the number of in-service classes taken by the teachers?

A data point that is very atypical of the scores in a distribution is called:

Which of the following distributions is positively skewed?

In a frequency distribution, data values are put into intervals and the frequencies of the intervals are reported.

What is the median of the following set of scores: 18, 6, 12, 10, 14?

Which statement below is true?

A contingency table is:

A table listing the values of a variable and their frequencies of occurrence is called:

Introduction to Educational Research

Quantitative, Qualitative, and Mixed Research

Action Research for Lifelong Learning

How to Review the Literature and Develop Research Questions

How to Write a Research Proposal

Research Ethics

Standardized Measurement and Assessment

How to Construct a Questionnaire

Methods of Data Collection

Sampling in Quantitative, Qualitative, and Mixed Research

Validity of Research Results in Quantitative, Qualitative, and Mixed Research

Experimental Research: Weak and Strong Designs

Experimental Research: Quasi and Single-Case Designs

Nonexperimental Quantitative Research

Narrative Inquiry and Case Study Research

Phenomenology, Ethnography, and Grounded Theory

Mixed Research

Inferential Statistics

Data Analysis in Qualitative and Mixed Research

How to Prepare a Research Report and Use Apa Style Guidelines

Filters

Exam 18: Descriptive Statistics

A measure of variability provides information about the typical values of a variable.

Which measure of variability is used the least by researchers?

Calculate the range, variance, and standard deviation.

What is an advantage of the mean as a measure of central tendency?

A simple regression equation includes what are called "partial regression coefficients."

If everyone in your neighborhood had exactly the same income, the variance would be equal to zero.

Compare and contrast simple and multiple regression.

A measure of central tendency provides information about the variability within a distribution.

Below are four sets of intervals for grouped frequency distributions. The data that they are based on has scores that range from 0 to 49. Only one set of intervals meets the necessary criteria for groupings. Pick the one that meets the criteria:

When the data tend to be homogeneous, the variance and standard deviation will tend to be larger.

What is the difference between the regression coefficient in a simple regression and the regression coefficients in a multiple regression?

Examine the frequency distribution listed below. The variable is the number of in-service training classes teachers have attended over a two-year period. What is the mode for the number of in-service classes taken by the teachers?

A data point that is very atypical of the scores in a distribution is called:

Which of the following distributions is positively skewed?

In a frequency distribution, data values are put into intervals and the frequencies of the intervals are reported.

What is the median of the following set of scores: 18, 6, 12, 10, 14?

Which statement below is true?

A contingency table is:

A table listing the values of a variable and their frequencies of occurrence is called:

Introduction to Educational Research

Quantitative, Qualitative, and Mixed Research

Action Research for Lifelong Learning

How to Review the Literature and Develop Research Questions

How to Write a Research Proposal

Research Ethics

Standardized Measurement and Assessment

How to Construct a Questionnaire

Methods of Data Collection

Sampling in Quantitative, Qualitative, and Mixed Research

Validity of Research Results in Quantitative, Qualitative, and Mixed Research

Experimental Research: Weak and Strong Designs

Experimental Research: Quasi and Single-Case Designs

Nonexperimental Quantitative Research

Narrative Inquiry and Case Study Research

Phenomenology, Ethnography, and Grounded Theory

Mixed Research

Inferential Statistics

Data Analysis in Qualitative and Mixed Research

How to Prepare a Research Report and Use Apa Style Guidelines

Filters