Question 1

Which will have the highest score value in the distribution?

Accepted Answer

A)  The mode 
B)  The median 
C)  The mean 
D)  The variance 
A)  The mode 
B)  The median 
C)  The mean 
D)  The variance

Question 2

A measure of variability is a numerical index:

Accepted Answer

A)  of the central tendency of the data values in a set of data 
B)  that indicates how spread out the data values are in a set of data 
C)  that indicates the level of skewness of the data 
D)  that indicates if two variables vary together 
A)  of the central tendency of the data values in a set of data 
B)  that indicates how spread out the data values are in a set of data 
C)  that indicates the level of skewness of the data 
D)  that indicates if two variables vary together

Question 3

When the points in a scatter plot clearly move in a top-left to bottom-right direction, one has a _______ relationship.

Accepted Answer

A)  Positive 
B)  Negative 
C)  Causative 
D)  None of the above 
A)  Positive 
B)  Negative 
C)  Causative 
D)  None of the above

Question 4

Scores that have been converted from one scale to another to have a particular mean and standard deviation are called:

Accepted Answer

A)  Percentile ranks 
B)  Deviation scores 
C)  Change scores 
D)  Standard scores 
A)  Percentile ranks 
B)  Deviation scores 
C)  Change scores 
D)  Standard scores

Question 5

A researcher is planning a study that has one dependent variable and two independent variables. Which data analysis procedure would she use?

Accepted Answer

A)  Simple regression analysis 
B)  Standard deviation analysis 
C)  Multiple regression analysis 
D)  z score analysis 
A)  Simple regression analysis 
B)  Standard deviation analysis 
C)  Multiple regression analysis 
D)  z score analysis

Question 6

How do the y-intercept and the regression coefficient differ?

Accepted Answer

The y-intercept represents the

Question 7

Let us suppose we are predicting the score on a training posttest from the number of years of education and the score on an aptitude test given before training. Here is the regression equation: Y = 25 + .5X1 +10X2,
Where X1 = years of education and X2 = aptitude test score.
What does the .5 in front of X1 tell us?

Accepted Answer

A)  Where the equation crosses the y-axis 
B)  How much change in posttest score you get per unit change in aptitude test score 
C)  How much change in the posttest score you get per unit change in years of education 
D)  How much change in the years of education you get per unit change in posttest score 
A)  Where the equation crosses the y-axis 
B)  How much change in posttest score you get per unit change in aptitude test score 
C)  How much change in the posttest score you get per unit change in years of education 
D)  How much change in the years of education you get per unit change in posttest score

Question 8

If one wishes to visualize the relationship between two quantitative variables, which of the following should be used?

Accepted Answer

A)  A contingency table 
B)  A bar graph 
C)  A scatter plot 
D)  A frequency distribution 
A)  A contingency table 
B)  A bar graph 
C)  A scatter plot 
D)  A frequency distribution

Question 9

When a distribution of data is perfectly symmetrical, the mean, median, and mode will have the same value.

Accepted Answer

A) True 
 B)False

Question 10

The numerator of the z score formula is:

Accepted Answer

A)  The standard deviation 
B)  The difference between a score and the mean 
C)  The range 
D)  The mean 
A)  The standard deviation 
B)  The difference between a score and the mean 
C)  The range 
D)  The mean

Question 11

A simple regression examines:

Accepted Answer

A)  How two or more independent variables predict or explain the scores on a dependent variable 
B)  How to create a graph that shows changes across time 
C)  How one independent variable is confounded with another independent variable 
D)  The prediction or explanation of scores on one dependent variable based on the scores from one independent variable 
A)  How two or more independent variables predict or explain the scores on a dependent variable 
B)  How to create a graph that shows changes across time 
C)  How one independent variable is confounded with another independent variable 
D)  The prediction or explanation of scores on one dependent variable based on the scores from one independent variable

Question 12

A multiple regression equation based on one dependent variable and four independent variables will have two partial regression coefficients.

Accepted Answer

A) True 
 B)False

Question 13

Below is a regression equation predicting children's math achievement from their parents' education level (years of education). Y = 1 + 2x, where x is the number of years of parental education.
What would be the predicted score for a child whose parents had 10 years of education?

Accepted Answer

A)  21 
B)  20 
C)  12 
D)  11 
A)  21 
B)  20 
C)  12 
D)  11

Question 14

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 very stable from sample to sample 
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 very stable from sample to sample 
D)  It can be used with nominal variables

Question 15

In a grouped frequency distribution, it is important that the intervals be:

Accepted Answer

A)  Overlapping 
B)  No greater than 10 units 
C)  Mutually exclusive 
D)  No greater than 5 units 
A)  Overlapping 
B)  No greater than 10 units 
C)  Mutually exclusive 
D)  No greater than 5 units

Question 16

A histogram is a graphic that shows the frequencies and shape that characterize a quantitative variable.

Accepted Answer

A) True 
 B)False

Question 17

Below is a contingency table containing frequencies and column percentages that looks at the relationship between handedness and majoring in science versus the humanities. Is there a likely relationship between handedness and major?

Accepted Answer

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

Question 18

In a scatter plot, when the dots are close together and fall in a relatively straight slanted line, what does this suggest?

Accepted Answer

A)  A strong positive or negative relationship 
B)  A curvilinear relationship 
C)  A dispersal of data that should be discarded 
D)  A weak positive or negative relationship 
A)  A strong positive or negative relationship 
B)  A curvilinear relationship 
C)  A dispersal of data that should be discarded 
D)  A weak positive or negative relationship

Question 19

Explain the difference between the y-intercept and the regression coefficient.
Multiple Choice

Accepted Answer

The y-intercept and the regression coeff

Question 20

A z score of 0.00 means that:

Accepted Answer

A)  A person had zero points on a test 
B)  A person scored at the mean 
C)  A person scored below the mean 
D)  A person scored in the bottom percentile 
A)  A person had zero points on a test 
B)  A person scored at the mean 
C)  A person scored below the mean 
D)  A person scored in the bottom percentile

Which will have the highest score value in the distribution?

A measure of variability is a numerical index:

When the points in a scatter plot clearly move in a top-left to bottom-right direction, one has a _______ relationship.

Scores that have been converted from one scale to another to have a particular mean and standard deviation are called:

A researcher is planning a study that has one dependent variable and two independent variables. Which data analysis procedure would she use?

How do the y-intercept and the regression coefficient differ?

If one wishes to visualize the relationship between two quantitative variables, which of the following should be used?

When a distribution of data is perfectly symmetrical, the mean, median, and mode will have the same value.

The numerator of the z score formula is:

A simple regression examines:

A multiple regression equation based on one dependent variable and four independent variables will have two partial regression coefficients.

Below is a regression equation predicting children's math achievement from their parents' education level (years of education). Y = 1 + 2x, where x is the number of years of parental education. What would be the predicted score for a child whose parents had 10 years of education?

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

In a grouped frequency distribution, it is important that the intervals be:

A histogram is a graphic that shows the frequencies and shape that characterize a quantitative variable.

Below is a contingency table containing frequencies and column percentages that looks at the relationship between handedness and majoring in science versus the humanities. Is there a likely relationship between handedness and major?

In a scatter plot, when the dots are close together and fall in a relatively straight slanted line, what does this suggest?

Explain the difference between the y-intercept and the regression coefficient. Multiple Choice

A z score of 0.00 means that:

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

Which will have the highest score value in the distribution?

A measure of variability is a numerical index:

When the points in a scatter plot clearly move in a top-left to bottom-right direction, one has a _______ relationship.

Scores that have been converted from one scale to another to have a particular mean and standard deviation are called:

A researcher is planning a study that has one dependent variable and two independent variables. Which data analysis procedure would she use?

How do the y-intercept and the regression coefficient differ?

If one wishes to visualize the relationship between two quantitative variables, which of the following should be used?

When a distribution of data is perfectly symmetrical, the mean, median, and mode will have the same value.

The numerator of the z score formula is:

A simple regression examines:

A multiple regression equation based on one dependent variable and four independent variables will have two partial regression coefficients.

Below is a regression equation predicting children's math achievement from their parents' education level (years of education). Y = 1 + 2x, where x is the number of years of parental education. What would be the predicted score for a child whose parents had 10 years of education?

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

In a grouped frequency distribution, it is important that the intervals be:

A histogram is a graphic that shows the frequencies and shape that characterize a quantitative variable.

Below is a contingency table containing frequencies and column percentages that looks at the relationship between handedness and majoring in science versus the humanities. Is there a likely relationship between handedness and major?

In a scatter plot, when the dots are close together and fall in a relatively straight slanted line, what does this suggest?

Explain the difference between the y-intercept and the regression coefficient. Multiple Choice

A z score of 0.00 means that:

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