Question

Which of the following words/symbols would indicate that you are reading results from a multiple-regression analysis?

- A. b
- B. Sig
- C. r
- D. d

Researchers may be interested in how a variable changes over the course of a major event that is scheduled outside of experimental control. This is called:

- A. nonequivalent control group design.
- B. wait-list design.
- C. reversal design.
- D. interrupted time-series design.

In a multiple regression design, __________ variable is to dependent variable as ___________ variable is to independent variable.

- A. criterion; predictor
- B. manipulated; measured
- C. control; mediator
- D. bivariate; multivariate

Which of the following cannot be found in a one-group, pretest/posttest design?

- A. A random sample
- B. A valid measure
- C. A comparison group
- D. A manipulation

Please provide a brief explanation to the correct choice

Answer #1

Ans:

1)Correct option is **d**.

The **d** indicates statistic for Durbin-Watson
test for auto-correlation.

2)Correct option is** wait-list
design.**

A wait list control group, also called a wait list comparison, is a group of participants included in an outcome study that is assigned to a waiting list and receives intervention after the active treatment group.

3)Correct option is **criterion; predictor.**

The predictor variable is analogous to an independent variable and is used to predict an outcome (the criterion variable).

4)Correct option is **A comparison group.**

As in pre-test/post test,as single group is measured or manipulated at different times.

Define the following terms: 1. Confound 2. Internal Validity 3.
Multiple-group Time-series Design 4. Non-equivalent Control Group
Posttest Only Design 5. Non-manipulated Independent Variable 6.
Regression to the Mean 7. Single-group Posttest Only Design 8.
Single-group Pretest-posttest Design 9. Single-group Time-series
Design 10. Systematic Replication 11. Testing Effect

1. The following output is from a multiple regression analysis
that was run on the variables FEARDTH (fear of
death) IMPORTRE (importance of religion),
AVOIDDTH (avoidance of death),
LAS (meaning in life), and
MATRLSM (materialistic attitudes). In the
regression analysis, FEARDTH is the criterion
variable (Y) and IMPORTRE,
AVOIDDTH, LAS, and
MATRLSM are the predictors (Xs). The SPSS output
is provided below, followed by a number of questions (12 points
total).
Descriptive
Statistics
Mean
Std. Deviation
N
feardth
27.0798
8.08365...

You are interested in the benefits of different types of
technology training on teachers' technology skills, use, and their
attitude regarding instructional technologies. You are in a unique
position to be able to study all of the teachers in a regional unit
that houses several districts. You, therefore, can conduct the
research any way that you would like to.
a. Given this scenario, what are some of the potential
extraneous variables we need to be careful to consider? List
three....

#1. Which of the following scenarios would be best described as
having a true experimental research design?
A
Research Question: Do a smaller proportion of graduates attend
graduation when it is held on a Sunday compared to Saturday?
Design: Randomly select 40 graduates the year it is held on a
Saturday and record how many attend graduation. Do the same thing
on a year the ceremony is held on a Sunday.
B
Research Question: Is a new vaccination effective at...

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