QUESTIONS

Question 1

How many independent variables are there is a 2 x 2 factorial design?

Question 2

Roberto is using a correlational design to study number of years students have not attended school and GPA. He finds a correlation of +.8. What does this mean?

There is a strong relationship between the length of time out of school and GPA.
People who have spent more time out of school are more likely to have a higher GPA.
People who have a higher GPA are more likely to spent more years out of school.
All of the above.

Question 3

Dr. Hoover wants to study the effects of different types of alcohol on learning different subjects. He has subjects drink either beer, wine, or tequila. They listen to an hour lecture on one of three subjects (philosophy, physics, and psychology) and take a test at the end of the lecture. How many separate groups of participants would be need for this between-subjects two-factor study with three levels of one factor and three levels of the other?

Question 4

A 2 x 2 factorial study is developed to study the impact of television on language skills of children starting kindergarten. Based on reports of parents, children are placed into one of four groups: (1) small amounts of noneducational television, (2) small amounts of educational television, (3) large amounts of noneducational television, or (4) large amounts of educational television. The researcher shows there is no difference in language skills if the children view very little television. Their language skills are high, no matter what type of television they watch. Children who see large amounts of television have better language skills if they watch educational television versus noneducational, and those skills are equal to those who have not watched much television. Based on this information, what conclusion can you draw?

Television is harmful to language development.
The type of television show matters, no matter how much television a child watches.
Watching television leads to excellent language development.
The type of television show only impacts language development if children watch a lot of television.

Question 5

An educational psychologist wants to do a 2 x 2 factorial study on the impact of community college students who are assigned to a first year study program or a program to support diversity and whether they come to a mandatory study hall or study on their own. What is a possible outcome of the study?

There can be a main effect for the type of program.
There can be a main effect for the type of study time and an interaction between the program and the study time.
There can be no main or interaction effect for the study.
All of the above.
None of the above.

Question 6

Dr. Nassar is doing a study on how prosocial aspects in video games impact displays of kindness. She has children come to a laboratory to play games (ones with prosocial situations and ones with violence). The children are assigned one condition, but all then go and spend time in a playroom where another child is sad. She observes to see who is more likely to help the sad child. She also wants to see if there are differences between males and females. This is an example of what kind of study?

quasi-experimental
non-experimental
combined strategy
within-subjects design

Question 7

Which of the following statistical analysis is used in evaluating the results from a factorial study?

mean
analysis of variance
F-ratio
all of the above

Question 8

Dr. Histamine is doing a study to measure allergy symptoms before and after taking allergy shots for 6 months. One group takes shots that contain serum and the other group takes shots that contain a placebo. What kind of design is being used?

mixed design
between-subjects design
within-subjects design
higher order factorial design

Question 9

Which of the following is TRUE about a two-factor analysis of variance?

It conducts one hypothesis test and produces one F-ratio.
It conducts two hypothesis tests and produces two F-ratios.
It conducts three hypothesis tests and produces three F-ratios.
None of the above are correct.

Question 10

As cars go faster on the highway, the amount of time it takes to get to the destination decreases. This is an example of what concept?

positive correlation
negative correlation
zero correlation
coefficient of determination

Question 11

Which of the following is an outcome variable?

independent variables
predictor variable
criterion variable
Both 1 and 2

Question 12

Which of the following is TRUE in what a multiple regression can tell a researcher?

it can explain how personality can predict success as an athlete.
It can predict a relationship between personality and success as an athlete.
It can prove a cause and effect relationship.
All of the above.

Question 13

In the summer, as temperatures increase, so do ice cream sales and crime rate, both positive correlations. There is also a positive correlation relationship between ice cream sales and crime rate. How would researchers explain the relationship between ice cream and crime rate?

People who eat ice cream and want to commit more crimes is a true relationship.
High temperatures make people cranky and they commit more violence.
This is a third variable problem, where another variable is controlling ice cream sales and crime rates.
There is a causal relationship between people who commit crimes and those who eat ice cream.

Question 14

A television station reports on a correlational study and states that teenagers who play more video games will become violent. What is the problem with this statement?

We cannot predict behavior based on a correlation.
Correlational studies cannot be interpreted as being causational.
Both 1 and 2 are correct answers.
There is nothing wrong with this statement.

Question 15

Dr. Tyson hopes to demonstrate that children who do meditation every morning tend to have fewer behavioral problems that their peers. If this results is obtained, then ___________ would be the predictor variable and ___________ would be the criterion variable for the study.

meditation; behavioral problems
behavioral problems; meditation
doing meditation; not doing meditation
no behavioral problems; many behavioral problems

ANSWERS

Question 1

How many independent variables are there is a 2 x 2 factorial design?

Correct Answer: 2

Question 2

Roberto is using a correlational design to study number of years students have not attended school and GPA. He finds a correlation of +.8. What does this mean?

There is a strong relationship between the length of time out of school and GPA.
People who have spent more time out of school are more likely to have a higher GPA.
People who have a higher GPA are more likely to spent more years out of school.
All of the above.

Correct Answer: All of the above.

Question 3

Correct Answer: 9

Question 4…

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(Answer) PSYU 304 Week 6 Quiz