Question 1

A variable measured as a score is measured at the interval level.

Accepted Answer

A) True 
 B)False

Question 2

Suppose that you have the following study hypothesis: Males will report higher salaries than females when years of experience and position level are taken into consideration. How many variables are in this hypothesis?

Accepted Answer

A)  One 
B)  Two 
C)  Three 
D)  Four

Question 3

Suppose you have composed the following study hypothesis: There is a positive relationship between grades in school (measured numerically rather than by letters) and scores for self-esteem. What statistic would be appropriate for testing this hypothesis?

Accepted Answer

A)  Chi-square, which examines the relationship between two variables where each is measured at the nominal level. 
B)  Independent t test, which examines the relationship between one dichotomous variable and one variable measured at the interval level. 
C)  Paired t test, which examines a set of matched scores for one group of people. 
D)  Pearson correlation coefficient, which examines the relationship between two variables where each is measured at the interval level.

Question 4

If your study variable measures opinions with answer like strongly agree, agree, disagree, and strongly disagree, you will have a variable that is measured at the nominal level rather than ordinal or interval.

Accepted Answer

A) True 
 B)False

Question 5

What are two of the questions you must answer in order to select an inferential statistic?

Accepted Answer

A)  What conclusions do you want to draw? Which variable is the dependent one? 
B)  At what level is each variable measured? How many variables are in the analysis? 
C)  What variable is the entropic variable? How many people are in the study sample? 
D)  Are there any variables in the analysis that are measured at the ratio level? How many people are in the study population?

Question 6

A perfect empirical relationship that is positive would be indicated by a correlation coefficient of ______.

Accepted Answer

A)  0.50 
B)  0.05 
C)  1.0 
D)  -1.0

Question 7

Consider the following items of information that you might include in the study conclusions section of your research report: (a) the limitations of your study methodology, (b) the strengths of the methodology, (c) a summary of the results of your study in regard to the basic research question, (d) your opinions on the theme of the study, (e) the implications of the study results for social work practice. Answer each of the following questions: (1) Which of these items of information should come first in your study conclusions section of the report? (2) Which of these items is the least important for the study conclusions section of your research report? (3) What are some safeguards to consider if you decide to include this least important item?

Accepted Answer

The answer of Consider the following items of information that...

Question 8

Which of the following is an example of the structure of your data when you are seeking a statistic for testing your study hypothesis?

Accepted Answer

A)  You are examining the matched pretest and posttest scores for a group of clients. 
B)  You are examining the proportions of people in your study who have at least one child living in the home. 
C)  You are computing the mean salary of the people in your study sample. 
D)  You are computing the correlation coefficient between three variables.

Question 9

The independent t test is an example of a statistic that can be used to test a hypothesis.

Accepted Answer

A) True 
 B)False

Question 10

Suppose that you have the following study hypothesis: Males will report higher salaries than females when years of experience and position level are taken into consideration. What is the independent variable in this hypothesis?

Accepted Answer

A)  position level 
B)  years of experience 
C)  gender 
D)  males

Question 11

The proportion is ______.

Accepted Answer

A)  an example of an inferential statistic 
B)  the average of a variable measured at the interval level 
C)  the most dominant answer to a question that is measured at the ordinal level 
D)  the percent of people who fall into a category

Question 12

Inferential statistics are used to ______.

Accepted Answer

A)  describe people 
B)  test a hypothesis 
C)  select a study sample 
D)  determine the tool to use to measure a study variable

Question 13

What should the study conclusions of your research report start with?

Accepted Answer

A)  summary of the literature in regard to the theme of the study 
B)  summary of the data with regard to the major study question 
C)  presentation of descriptive data on the nature of the study sample 
D)  summary of your opinions based on your practice experience

Question 14

Which of the following is a descriptive statistic?

Accepted Answer

A)  the mean 
B)  the most often cited word that reveals one's most important need 
C)  the correlation coefficient 
D)  the t test

Exam 16: Analyzing Data and Drawing Conclusions

A variable measured as a score is measured at the interval level.

Suppose that you have the following study hypothesis: Males will report higher salaries than females when years of experience and position level are taken into consideration. How many variables are in this hypothesis?

Suppose you have composed the following study hypothesis: There is a positive relationship between grades in school (measured numerically rather than by letters) and scores for self-esteem. What statistic would be appropriate for testing this hypothesis?

If your study variable measures opinions with answer like strongly agree, agree, disagree, and strongly disagree, you will have a variable that is measured at the nominal level rather than ordinal or interval.

What are two of the questions you must answer in order to select an inferential statistic?

A perfect empirical relationship that is positive would be indicated by a correlation coefficient of ______.

Which of the following is an example of the structure of your data when you are seeking a statistic for testing your study hypothesis?

The independent t test is an example of a statistic that can be used to test a hypothesis.

Suppose that you have the following study hypothesis: Males will report higher salaries than females when years of experience and position level are taken into consideration. What is the independent variable in this hypothesis?

The proportion is ______.

Inferential statistics are used to ______.

What should the study conclusions of your research report start with?

Which of the following is a descriptive statistic?