Question

Lay out the design for two between-subjects experiments: a) an experiment involving an experimental group and a control group, and b) a factorial design with three independent variables that have three, and two levels respectively.

Answer #1

A. In a between-subjects design, the various experimental treatments are given to different groups of subjects. The subjects are first randomly divided into two groups, an experimental group and a control group. The experimental group is exposed to the manipulation of independent variable whereas the control group only serves as comparison group and receives no exposure to the independent variable manipulation.

B. In this type of a factorial design, each independent variable is a factor in the design. Because there are three factors and each factor has two levels, this is a 2×2×2 factorial design. This design will have 2x2x2=8 different experimental conditions. To conduct this experiment, the investigator would randomly assign individuals to each of the eight experimental conditions. Each experimental condition in this design represents a different treatment protocol.

The
question concerning Layout the design for two between subject
experiment involving an experimental group and a control group, and
(b) a factorial design with three independent variables that have
3, 2, and 2 levels respectively. Where did the expert got his
reference from?

1. A factorial design is one in which
………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
2. The number of times each experimental condition is observed in a
factorial design is known as
……………………………………………………………………………………………
3. The best way to control for extraneous variables in research
studies is
……………………………………………………………………………………………………………………………………………………………………………………………………
4. Control in experimental research is BEST described as an attempt
to
……………………………………………………………………………………………………………………………………………………………………………………………………
5. If we have 2 factors and two levels per factors, what kind of
experiment is this?
……………………………………………………………………………………………………………………………………………………………………………………………………
6. What information is given in the factorial...

Distinguish between...
A. Independent and Dependent Variables
B. Random Group Design and Matched Group Design
C. Experimental and Control Groups
D. Nominal, Ordinal, Interval and Ratio Scales

In a two group between-subjects experiment, if the effect of the
independent variable increases, what would happen to the absolute
value of the obtained t-statistics an what would happen to the
critical value of t? In a two group between subjects experiment, if
the effect of the independent variable increases, what would happen
to the direction of the independent variable? In a two group
between subjects experiment, if the standard deviation of the
dependent variable increases, what would happen to...

A design of experiment is to be performed on 2 factors and two
levels. How many experiments do you need to do? Please specify the
orthogonal experiment, using the nomenclature Lx.
Full factorial ______ 1/2 factorial (half Fraction) _______
Saturated (Screening Design). ________

You decide to do a 2 x 2 between subjects factorial design to
examine how feedback on Facebook posts influence well-being. You
are studying active (multiple posts a day) Facebook users.
There are two independent variables, each with two levels. IV A
is Facebook "likes." For two days, participants will receive zero
"likes" on all their Facebook posts or between 25-50 "likes" on all
posts. IV B is Facebook comments. For two days, participants will
receive no comments on all...

Suppose we have a Between-Subjects, One Factor, Two-Level
experiment. What would be wrong with using two dummy variables (two
columns of 0’s and 1’s) to represent that independent variable with
two levels?

. Experimental Design: From the work you have done this
semester, choose a topic and design an experiment you would be able
to perform. In your design (1) state your hypothesis, (2) identify
your dependent and (3) independent variables, (4) your control
conditions and (5) describe your experimental procedure.

Select a peer-reviewed, experimental research study that
exemplifies a two-group design and a factorial design (use keywords
method, results, and discussion in your Boolean search). These
studies can be found using tools such as the GCU Library and Google
Scholar.
Write a 500-750-word paper in which you:
Compare the two research designs.
Identify the independent variable(s), dependent variable, and
any possible extraneous variable.
Identify main effects and interactions for the factorial
design.
Explain if the study has a random sample...

TRUE / FALSE to the questions below
11. In
basic experimental designs, the interaction of two independent
variables can be
studied.
12.
Field experiments are conducted in laboratory settings.
13.
External validity has to do with the determination of whether the
independent variable
was the sole cause of the changes in the dependent variable.
14. A
major advantage of the static group design is that we have some
assurance that the
groups were equal on the variables...

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