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Homework answers / question archive / Quantitative Research Flag question: Question 1 Question 11 pts Correlational research allows the researcher to answer questions such as: Group of answer choices what is the relationship between Variable A and Variable B? does change in Variable A cause change in Variable B? is there a significant difference between scores on Variable A and scores on Variable B? does change in Variable B causes change in Variable A? Flag question: Question 2 Question 21 pts Marialexa conducts an economic study and asks her participants to provide information about their family incomes
Quantitative Research
Question 11 pts
Correlational research allows the researcher to answer questions such as:
Group of answer choices
what is the relationship between Variable A and Variable B?
does change in Variable A cause change in Variable B?
is there a significant difference between scores on Variable A and scores on Variable B?
does change in Variable B causes change in Variable A?
Flag question: Question 2
Question 21 pts
Marialexa conducts an economic study and asks her participants to provide information about their family incomes. First, they are asked to check one box from a list of three, indicating whether they consider themselves low-income, middle-income, or high-income. She refers to this as the self-identification variable. Then, they are asked (if they are willing) to provide their annual income in dollars. She refers to this as the dollar-figure variable. The study is both confidential and anonymous, and most people answer both questions. Which of the following statements accurately describes Marialexa's dependent variables?
Group of answer choices
Both are continuous
The self-identification variable is discrete and the dollar-figure variable is continuous
Both are discrete
The self-identification variable is continuous and the dollar-figure variable is discrete
Flag question: Question 3
Question 31 pts
In experimental design, the variable that is manipulated is the:
Group of answer choices
dependent variable.
independent variable.
confounding variable.
constant.
Flag question: Question 4
Question 41 pts
Advantages of questionnaires include all of the following EXCEPT:
Group of answer choices
large numbers of people can be contacted for a relatively low cost.
data can be gathered from a large number of people in a relatively short period of time.
participants may feel more confident about their anonymity and therefore respond more honestly.
because questions are in written form, they are less likely to be misunderstood by respondents.
Flag question: Question 5
Question 51 pts
A researcher wishes to study developmental changes in people's preference for action movies. The researcher locates 50 people at each of the following ages: 15, 20, 25, 30, 35, 40, 45, and 50 years. She asks them to rate their preference for action movies in relation to other sorts of movies. This is an example of which type of design?
Group of answer choices
longitudinal
nested
cross-sectional
panel
Flag question: Question 6
Question 61 pts
"There will be differences in degree of mood elevation seen in depressed clients after receiving either cognitive-behavioral or psychoanalytic therapy." During a test of this hypothesis, it was discovered that some of the participants lived with family members and others lived alone. This variable, living situation, is a/an ________.
Group of answer choices
independent variable.
dependent variable.
constant.
confounding variable.
Flag question: Question 7
Question 71 pts
A researcher wishes to study developmental changes in the music people prefer to listen to. The researcher locates 50 people who are about 20 years old. She sends these people a questionnaire every year for the next 10 years asking about the types of music they prefer to listen to. This is an example of which type of design?
Group of answer choices
longitudinal
nested
cross-sectional
panel
Flag question: Question 8
Question 81 pts
Dr. Dow Jones wants to know whether a problem-based approach to teaching economics will result in higher academic performance than his traditional method. Of the six sections of Economics 101 at his university, Dr. Jones randomly assigns three sections to the traditional method and three sections to the problem-based method. At the end of semester all students complete the same final exam. In this design, students studying under the problem-based method constitute the:
Group of answer choices
placebo group.
treatment group.
sample.
control group.
Flag question: Question 9
Question 91 pts
Dr. Dow Jones wants to know whether a problem-based approach to teaching economics will result in higher academic performance than his traditional method. Of the six sections of Economics 101 at his university, Dr. Jones randomly assigns three sections to the traditional method and three sections to the problem-based method. At the end of the semester, all students complete the same final exam. In this design, students studying under the traditional method constitute the:
Group of answer choices
placebo group.
treatment group.
sample.
control group.
Flag question: Question 10
Question 101 pts
Which of the following scenarios best illustrates a cohort-sequential design?
Group of answer choices
Don studies high school seniors' concerns about world events during their post-secondary experiences. He surveys the entire senior class state-wide. He surveys them again every year for eight years.
Melanie is conducting a survey for her thesis that examines administrative policies in middle schools that are intended to decrease bullying. After developing her survey and piloting the instrument with a small group, she then administers the instrument to a sample of 2300 middle-school administrators.
Jana wants to understand what predicts student success on the statewide standardized biology competency test. She administers the Biology Interest Survey (BIS) to all of her students at the start of the term and then categorizes students into two groups: those who have taken biology before and those who have not. She then administers an in-class exam at the end of the term.
Molly's study examines the benefits of exercise on weight loss. In one group she advocates exercise as well as a new diet program. In the comparison group she only presents the diet program. Those in the comparison group find out that some of Molly's clients are in an exercise program too, so they form an exercise group on their own.
Flag question: Question 11
Question 111 pts
Among survey methods, ________ generally generate the highest response rate.
Group of answer choices
telephone interviews
interviews using video-conferencing
face-to-face interviews
online surveys
Flag question: Question 12
Question 121 pts
In Katia's remedial mathematics study, she collected pretest data from a group of participants. She divided the participants into three groups. One group received no treatment, one group received instruction by a teacher-delivered intervention, one group received peer tutoring on the same problems. After the intervention she tested their math skills. With which validity threat should Katia be most concerned?
Group of answer choices
Maturation
Testing
Instrumentation
Attrition
Flag question: Question 13
Question 131 pts
Characteristics of samples are known as:
Group of answer choices
Concepts
Parameters
Statistics
Estimations
Flag question: Question 14
Question 141 pts
"There will be differences in degree of mood elevation seen in depressed clients after receiving either cognitive-behavioral or psychoanalytic therapy." In this hypothesis, mood elevation is the:
Group of answer choices
dependent variable.
independent variable.
confounding variable.
constant.
Flag question: Question 15
Question 151 pts
Which of the following is an example of a good research question for a correlational study?
Group of answer choices
What are the attitudes of the parents about our districts new homework policy?
Is there a relationship between student achievement and homework completion?
Are there differences in parent attitudes about homework between mothers and fathers?
How much homework does the average fifth grade teacher in our district assign?
Flag question: Question 16
Question 161 pts
"There will be gender differences in degree of mood elevation seen in depressed clients after receiving cognitive-behavioral therapy." In this hypothesis, gender is the:
Group of answer choices
dependent variable.
independent variable.
confounding variable.
constant.
Flag question: Question 17
Question 171 pts
Of the following research topics, which is most likely to be an observational study?
Group of answer choices
The relationship between hours of exercise and sleep.
The difference in minutes a day exercising between boys and girls.
The types of exercise students engage in after school.
Students' feelings about after-school track practice.
Flag question: Question 18
Question 181 pts
How are inferential statistics different from descriptive statistics?
Group of answer choices
Descriptive statistics allow one to draw inferences from the sample to a target population.
Descriptive statistics verify the accuracy of the inferential statistics.
Inferential statistics describe the results of a study.
Inferential statistics allow one to draw inferences from the sample to a target population.
Flag question: Question 19
Question 191 pts
Regarding the length of questionnaires to be used in survey research, which of the following statements is most accurate?
Group of answer choices
Including a large number of items on the survey assures that you will get useful data for all of your trouble.
Keeping the survey short makes it more likely people will be willing to complete it.
A relatively lengthy survey communicates your seriousness about the research endeavor so people will be more willing to complete it.
Shorter surveys produce data that are ambiguous and therefore not useful.
Flag question: Question 20
Question 201 pts
Characteristics of populations are known as:
Group of answer choices
Concepts
Parameters
Statistics
Estimations
