The document outlines the process and significance of experimental research design, emphasizing its objective and controlled nature to validate hypotheses regarding variable relationships. It details five types of experimental designs, including pre-experimental, true experimental, quasi-experimental, factorial, and single-subject designs, along with their characteristics and examples. Additionally, it describes complete randomized design (CRD), its advantages and disadvantages, and concludes with a true/false quiz to reinforce understanding.

1. EXPERIMENTAL
RESEARCH DESIGN
AND
COMPLETE RANDOMIZED
DESIGN
MADE BY GROUP 2

2. 2
G R O U P 2
M E M B E R S
Andrian Lloyd A. Villaluz
Chester Jhon B. Buncag
Chris Matthew Sejas
Deana Chloe Calipayan
Jeth Janelleih Popelo
John Andrei Barillo
Jaiza Fate Sapitanan
Ceslhey Checa
Patrick Fullon
Rhein Jay Alarcon

3. 3
EXPERIMENTAL RESEARCH DESIGN
Aa
• Experimental design is the process of carrying out
research in an objective and controlled fashion so that
precision is maximized and specific conclusions can
be drawn regarding a hypothesis statement.
Generally, the purpose is to establish the effect that a
factor or independent variable has on a dependent
variable. However, this article is primarily focused on
planning research that will utilize experimental design
in order to test and validate the relationship between
and among experimental variables.

4. EXPERIMENTAL
DESIGN STEP’S
• The key steps in experimental
design include identifying the
research question, developing a
hypothesis, determining the
variables, selecting the
experimental design, determining
the sample size and sampling
method, developing the
experimental procedure,
conducting the experiment,
analyzing the data, drawing
conclusions, and communicating
the results

5. 5 TYPE’S OF
EXPERIMENTAL
DESIGN
5

6. • Pre-experimental design: This is a basic experimental design that lacks a control group.
Examples include one-group pretest-posttest design, static-group comparison design, and the
time-series design.
• True experimental design: This is a design that includes a control group and random assignment
of participants to groups. Examples include the randomized control trial, the posttest-only
control group design, and the pretest-posttest control group design.
• Quasi-experimental design: This is a design that lacks random assignment of participants to
groups but includes a control group. Examples include the non-equivalent control group design
and the interrupted time series design.
• Factorial design: This is a design that includes more than one independent variable. Examples
include the 2x2 design, the 3x3 design, and the mixed design.
• Single-subject design: This is a design that involves a single participant and repeated
measurements over time. Examples include the ABAB design, the multiple-baseline design, and
the changing criterion design.
6

7. COMPLETE
RANDOMIZED
DESIGN
• In the design of
experiments, completely
randomized designs are
for studying the effects of
one primary factor without
the need to take other
nuisance variables into
account. The experiment
compares the values of a
response variable based
on the different levels of
that primary factor.
7

8. ADVANTAGES
• This is much easier when creating
treatments and replicates
• CRD uses many number of
treatments and number
replicates
• It can also have a lot of samples
or topics in the experiment
• even if there are insufficient
data,an analysis could still be
performed
8

9. DISADVANTAGES
• It is hard to find samples
that’s similar in characteristic
• The sample that have some
dissimilarities might affect
the outcome of the
experiment
• The differences of the
outcome,wasn't the affect of
the independent variable,but
because of the dissimilarities
in the experimental samples
9

10. 10
Activity:
Raise your hand if you know
the statement is True or False.

11. 11
1.A completely randomized design is
useful when the primary goal of the
experiment is to study the effect of a
single factor.
True or False?

12. 12
2. A completely randomized
design is most appropriate when
the goal of the experiment is to
study the effect of multiple factors
and their interactions.
True or False?

13. 13
3. In a completely randomized
design, the effects of multiple
factors can be Studied
simultaneously
True or False?

14. 14
4. Is an experimental design is a way
of carrying out research in an
objective and controlled fashion so
that precision can be maximized and
specific conclusions can be drawn
regarding a hypothesis statement.
True or False

15. 15
5. Purpose of experimental design
is to establish the effect that a
factor or independent variable has
on a dependent variable?
True or False?

16. 16
WE HOPE ALL OF
US LEARNED
SOMETHING
TODAY AND WE
HOPE WE ALL
HAVE A NICE DAY
THANK YOU
!!!