Quantitative research: Overview

Transcript

00:01

Quantitative Research

00:02

Part 1

00:02

Overview

00:07

Outline

00:09

Definition of quantitative research

00:10

Characteristics of quantitative research

00:11

Strengths and limitations

00:16

DEFINITION

00:18

Quantitative research

00:21

Emphasizes on objective measurement and numerical analysis of data

00:22

Focuses on generalizing findings across groups of people

00:29

Characteristics

00:31

Main Characteristics

00:33

Has clearly defined research question to which objective answers are sought

00:35

Data is usually collected through structured research instruments

00:37

It can be replicated given its high reliability

00:39

Data is in a form of numbers and statistics

00:41

Use larger sample size based on representativeness of a population

00:47

Strengths

00:49

It allows for .....

00:50

a broader study involving a larger number of samples for generalization of findings

00:52

greater objectivity and accuracy of findings  

00:53

application of standard means for replication of study  

00:55

minimizing personal bias  

01:05

Limitations

01:11

Limitations

01:13

Static and rigid approach = inflexible process of discovery

01:15

Preset response does not necessarily reflect how people perceive about an issue or subject

01:17

Less elaborate accounts of human perception

01:18

May miss out contextual details

01:26

Summary

01:29

Quantitative research presumes to have an objective approach to study research problems where the data is controlled and measured in the process of accumulation of facts and determining causes of behaviors

01:41

What should you do before designing a quantitative research study?

01:48

Before designing a quantitative research, you should ...

01:53

Decide whether it will be descriptive or experimental in nature

02:02

Why?

02:06

It dictates how you collect, analyze and interpret the results of findings

02:13

A descriptive or non-intervention research is governed by the following principles ...

02:19

samples are generally measured once the intention is to establish association between variables use large sample size to ensure a valid estimate of a generalized relationship between variables has been obtained

02:27

What about intervention research design?

02:31

An intervention research design

02:36

It includes samples measured before and after a particular treatment It can be categorized into two: experimental and quasi-experimental research Samples may be small and purposefully chosen (depending on research problems) It is intended to establish causality between variables

02:43

References

02:44

Earl R. Babbie (2010) The practice of social research . 12th ed. CA: Wadsworth Cengage John W. Creswell & Timothy C. Guetterman (2019) Educational research: Planning, conducting and evaluating quantitative and qualitative research. 6th ed. London: Pearson Ranjit Kumar (2019) Research methodology: a step-by-step guide for beginners. 5th ed. London: Sage