Question 1

If the pattern of dots on a scatterplot runs from upper left to lower right what does this indicate?

Accepted Answer

A)  that the relationship is strong 
B)  that the relationship is weak 
C)  that it is a positive relationship 
D)  that it is a negative relationship 
A)  that the relationship is strong 
B)  that the relationship is weak 
C)  that it is a positive relationship 
D)  that it is a negative relationship D

Question 2

Which set of scores has the smallest standard deviation no calculations allowed or needed)?

Accepted Answer

A)  11, 17, 31, 53 
B)  5, 11, 42, 22 
C)  155, 153, 155, 157 
D) 27, 105, 10, 80 
A)  11, 17, 31, 53 
B)  5, 11, 42, 22 
C)  155, 153, 155, 157 
D) 27, 105, 10, 80 C

Question 3

The regression coefficient in a multiple regression equation is called

Accepted Answer

A)  partial correlation coefficient 
B)  correlation coefficient 
C)  partial regression coefficient 
D)  simple regression coefficient 
A)  partial correlation coefficient 
B)  correlation coefficient 
C)  partial regression coefficient 
D)  simple regression coefficient C

Question 4

The amount of change in Y for every one unit increase in X is indicated by the

Accepted Answer

A)  magnitude of the correlation coefficient. 
B)  correlation coefficient sign. 
C)  y-intercept. 
D)  slope regression coefficient). 
A)  magnitude of the correlation coefficient. 
B)  correlation coefficient sign. 
C)  y-intercept. 
D)  slope regression coefficient).

Question 5

For her senior research project Jerri collects survey data on the number of hours spent on social networking and grade point average GPA). She creates a scatterplot to graph her results. If the pattern of dots on her scatterplot goes from lower left to upper right, what would this indicate?

Accepted Answer

A)  that the relationship is strong 
B)  that it is a positive relationship 
C)  that it is a negative relationship 
D)  that people who spend a lot of time social networking tend to have a lower GPA 
A)  that the relationship is strong 
B)  that it is a positive relationship 
C)  that it is a negative relationship 
D)  that people who spend a lot of time social networking tend to have a lower GPA

Question 6

Which correlation coefficient represents the strongest association between X and Y?

Accepted Answer

A)  +.20 
B)  +.60 
C)  -.80 
D)  -1.5 
A)  +.20 
B)  +.60 
C)  -.80 
D)  -1.5

Question 7

A perfect relationship will results in a correlation coefficient value of

Accepted Answer

A)  1.00. 
B)  -1.00. 
C)  both a and b 
D)  neither a nor b 
A)  1.00. 
B)  -1.00. 
C)  both a and b 
D)  neither a nor b

Question 8

The mean of a set of numbers converted to z scores is________ and the standard deviation is__________ .

Accepted Answer

A)  0; 1 
B)  1; 0 
C)  2; 1 
D)  equal to population mean; impossible to determine 
A)  0; 1 
B)  1; 0 
C)  2; 1 
D)  equal to population mean; impossible to determine

Question 9

The least informative measure of central tendency is the

Accepted Answer

A)  mode. 
B)  median. 
C)  range. 
D)  variance. 
A)  mode. 
B)  median. 
C)  range. 
D)  variance.

Question 10

Assume that within one study the regression equation relating daily saturated fat intake in grams x) to blood cholesterol level y) is Y-hat = 130 + 5X. What is the value of the y-intercept for this problem?

Accepted Answer

A)  1 
B)  5 
C)  130 
D)  impossible to determine 
A)  1 
B)  5 
C)  130 
D)  impossible to determine

Question 11

What is the relationship between the standard deviation and variance?

Accepted Answer

A)  standard deviation equals squared variance 
B)  variance is the square root of standard deviation 
C)  standard deviation is the square root of variance 
D)  these two measures are unrelated 
A)  standard deviation equals squared variance 
B)  variance is the square root of standard deviation 
C)  standard deviation is the square root of variance 
D)  these two measures are unrelated

Question 12

Use the following frequency distribution to answer questions 
  
-Dr. Gomez would like to graph the scores from a recent exam a quantitative variable), what type of graph should she use and what should be on the horizontal axis?

Accepted Answer

A)  pie chart; modal values 
B)  histogram; exam score values 
C)  bar graph; frequency values 
D)  bar graph; exam scores 
A)  pie chart; modal values 
B)  histogram; exam score values 
C)  bar graph; frequency values 
D)  bar graph; exam scores

Question 13

__________regression involves the use of only one independent or predictor variable while __________regression involves two or more independent or predictor variable.

Accepted Answer

A)  Pearson's; partial 
B)  Easy; hard 
C)  Simple; multiple 
D)  Alpha; omega 
A)  Pearson's; partial 
B)  Easy; hard 
C)  Simple; multiple 
D)  Alpha; omega

Question 14

Which of the following is a measure of the standardized difference between two means?

Accepted Answer

A)  Cohen's d 
B) -bar 
C)  SD 
D)  Σr 
A)  Cohen's d 
B) -bar 
C)  SD 
D)  Σr

Question 15

The statistical symbol for a sample mean is

Accepted Answer

A)  μ 
B)  α 
C) $\bar{ X}$ 
D)  Σ 
A)  μ 
B)  α 
C) $\bar{ X}$ 
D)  Σ

Question 16

What is the median for the following set of scores? 2, 6, 2, 11, 14

Accepted Answer

A)  2 
B)  4 : 
C)  6 
D)  8.5 
A)  2 
B)  4 : 
C)  6 
D)  8.5

Question 17

What kind of graph uses bars that are separated by spaces?

Accepted Answer

A)  a bar graph 
B)  a histogram 
C)  both a and b 
D)  neither a nor b 
A)  a bar graph 
B)  a histogram 
C)  both a and b 
D)  neither a nor b

Question 18

Use the following frequency distribution to answer questions 
  
-What ACT score occurred 20% of the time?

Accepted Answer

A)  20 
B)  30 
C)  4 
D)  22 
A)  20 
B)  30 
C)  4 
D)  22

Question 19

If you would like to display the relationship between two categorical variables you should use a

Accepted Answer

A)  bar graph. 
B)  contingency table. 
C)  scatterplot. 
D)  histogram. 
A)  bar graph. 
B)  contingency table. 
C)  scatterplot. 
D)  histogram.

Question 20

Vanessa Kanaan, an Associate Professor at the University of Louisville, creates a new "empathy" test and administers it to business majors and biology majors. She finds that the two groups differ significantly from each other with an effect size Cohen's d) equal to .85. Based on this information which of the following statements is accurate?

Accepted Answer

A)  although her results are statistically significant, the effect size would be considered "small" meaning that it has little practical importance 
B)  the effect size in this study would be considered "moderate" 
C)  the effect size in this study would be considered "large" 
D)  it is impossible to obtain an effect size of .85; she must have calculated it incorrectly 
A)  although her results are statistically significant, the effect size would be considered "small" meaning that it has little practical importance 
B)  the effect size in this study would be considered "moderate" 
C)  the effect size in this study would be considered "large" 
D)  it is impossible to obtain an effect size of .85; she must have calculated it incorrectly

If the pattern of dots on a scatterplot runs from upper left to lower right what does this indicate?

Which set of scores has the smallest standard deviation no calculations allowed or needed)?

The regression coefficient in a multiple regression equation is called

The amount of change in Y for every one unit increase in X is indicated by the

For her senior research project Jerri collects survey data on the number of hours spent on social networking and grade point average GPA). She creates a scatterplot to graph her results. If the pattern of dots on her scatterplot goes from lower left to upper right, what would this indicate?

Which correlation coefficient represents the strongest association between X and Y?

A perfect relationship will results in a correlation coefficient value of

The mean of a set of numbers converted to z scores is and the standard deviation is__ .

The least informative measure of central tendency is the

Assume that within one study the regression equation relating daily saturated fat intake in grams x) to blood cholesterol level y) is Y-hat = 130 + 5X. What is the value of the y-intercept for this problem?

What is the relationship between the standard deviation and variance?

Use the following frequency distribution to answer questions -Dr. Gomez would like to graph the scores from a recent exam a quantitative variable), what type of graph should she use and what should be on the horizontal axis?

regression involves the use of only one independent or predictor variable while regression involves two or more independent or predictor variable.

Which of the following is a measure of the standardized difference between two means?

The statistical symbol for a sample mean is

What is the median for the following set of scores? 2, 6, 2, 11, 14

What kind of graph uses bars that are separated by spaces?

Use the following frequency distribution to answer questions -What ACT score occurred 20% of the time?

If you would like to display the relationship between two categorical variables you should use a

Introduction to Scientific Research

Research Approaches and Methods of Data Collection

Problem Identification and Hypothesis Formation

Ethics

Measuring Variables and Sampling

Research Validity

Control Techniques in Experimental Research

Experimental Research Design

Procedure for Conducting an Experiment

Quasi-Experimental Designs

Single-Case Research Designs

Survey Research

Qualitative and Mixed Methods Research

Inferential Statistics

Preparing the Research Report for Presentation or Publication

Filters

Exam 14: Descriptive Statistics

If the pattern of dots on a scatterplot runs from upper left to lower right what does this indicate?

Which set of scores has the smallest standard deviation no calculations allowed or needed)?

The regression coefficient in a multiple regression equation is called

The amount of change in Y for every one unit increase in X is indicated by the

For her senior research project Jerri collects survey data on the number of hours spent on social networking and grade point average GPA). She creates a scatterplot to graph her results. If the pattern of dots on her scatterplot goes from lower left to upper right, what would this indicate?

Which correlation coefficient represents the strongest association between X and Y?

A perfect relationship will results in a correlation coefficient value of

The mean of a set of numbers converted to z scores is________ and the standard deviation is__________ .

The least informative measure of central tendency is the

Assume that within one study the regression equation relating daily saturated fat intake in grams x) to blood cholesterol level y) is Y-hat = 130 + 5X. What is the value of the y-intercept for this problem?

What is the relationship between the standard deviation and variance?

Use the following frequency distribution to answer questions -Dr. Gomez would like to graph the scores from a recent exam a quantitative variable), what type of graph should she use and what should be on the horizontal axis?

__________regression involves the use of only one independent or predictor variable while __________regression involves two or more independent or predictor variable.

Which of the following is a measure of the standardized difference between two means?

The statistical symbol for a sample mean is

What is the median for the following set of scores? 2, 6, 2, 11, 14

What kind of graph uses bars that are separated by spaces?

Use the following frequency distribution to answer questions -What ACT score occurred 20% of the time?

If you would like to display the relationship between two categorical variables you should use a

Introduction to Scientific Research

Research Approaches and Methods of Data Collection

Problem Identification and Hypothesis Formation

Ethics

Measuring Variables and Sampling

Research Validity

Control Techniques in Experimental Research

Experimental Research Design

Procedure for Conducting an Experiment

Quasi-Experimental Designs

Single-Case Research Designs

Survey Research

Qualitative and Mixed Methods Research

Inferential Statistics

Preparing the Research Report for Presentation or Publication

Filters

The mean of a set of numbers converted to z scores is and the standard deviation is__ .

regression involves the use of only one independent or predictor variable while regression involves two or more independent or predictor variable.