There are five types of the quantitative approach in research which are survey research, correlational research, causal-comparative research, experimental research & single-subject research

1. TYPES OF
QUANTITATIVE
APPROACH
R E S E A R C H M E T H O D S
Q U A N T I T A T I V E R E S E A R C H
I S T H E C O L L E C T I O N & A N A L Y S I S
O F N U M E R I C A L D A T A T O
D E S C R I B E , E X P L A I N , P R E D I C T ,
O R C O N T R O L P H E N O M E N A O F
I N T E R E S T .
S U M M A R I Z E D B Y
T A R I Q A L - B A S H A
A L B A S H A T A R I Q @ O U T L O O K . C O M
5 T Y P E S

2. A research method
comprises the overall
strategy followed in
collecting & analyzing data.
Most research studies
follow a readily identifiable
strategy.
The largest distinction we
can make in classifying
research method is the
distinction between
quantitative & qualitative
research.
Quantitative & qualitative
research include several
distinct types or methods,
each designed to answer a
different kind of research
question.
OVERVIEW Is often designed to describe current
conditions.
One common type of survey research
involves assessing the preferences,
attitudes, practices, concerns, or
interests of a group of people.
It is mainly carried out through
questionnaires, interviews &
observations.
SURVEY RESEARCH
It studies that investigate the relations
between two or more variables.
The purpose of correlational study may
be to establish relations or use existing
relations to make predictions.
The results of correlational studies do
not suggest cause-effect relations
among variables.
CORRELATIONAL
RESEARCH
QUANTITATIVE APPROACH

3. It provides information about
cause-effect outcomes.
At least one independent
variable is manipulated, other
relevant variables are
controlled, and the effect on
one or more dependent
variables is observed.
True experimental research
provides the strongest results
of any of the quantitative
research approaches because
it provides clear evidence for
linking variables.
As a result, it offers
generalizability, or
applicability of findings to
settings and contexts
different from the one in
which they were obtained.
EXPERIMENTAL
RESEARCH
It provides information about cause-
effect outcomes.
The researcher lacks control over the
independent variable.
It is chosen precisely because the
grouping variable either cannot be
manipulated or should not be
manipulated.
It does not produce true
experimental research outcomes.
CAUSAL-
COMPARATIVE
RESEARCH
It studies that focus on the behavior
change an individual exhibits as a
result of some intervention.
It is used to study the behavior
change that an individual or group
exhibits as a result of some
intervention or treatment. In these
designs, these size of sample (the
individuals selected from a
population for a study) is said to be
one.
SINGLE-SUBJECT
RESEARCH
QUANTITATIVE APPROACH