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LESSON 12 - QUANTITATIVE RESEARCH DESIGNS: SURVEY, EX POST FACTO & EXPERIMENTAL
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- čas přidán 18. 04. 2021
- Quantitative research is the type of research that collects numerical data. This means that variables are measured quantitatively. The design that enables collection of numerical data are the quantitative research designs. This lesson will discuss quantitative research designs.
A research design is a plan that enables a researcher to determine the methods of sample selection, instruments to use and methods of analyzing data based on whether the approach used is qualitative, quantitative or mixed methods.
There are 3 main quantitative designs: Survey, Ex Post Facto and Experimental. Survey describes the characteristics of a population at a particular time. There are 3 types of survey; Cross sectional survey, Correlational Survey and Longitudinal Survey. Ex Post Facto (or Causal Comparative Research) means 'After the Fact'. This means that the researcher investigates the causes after the effect has been observed on the dependent variable. However, the researcher is not able to manipulate the independent variable. It is similar to correlational survey in that both establishes relationship. However, correlational establishes relationship between variables in a single group while causal comparative establishes relationship between groups. Experimental design is unique because it establishes causality. This means cause and effect relationship. There are two categories of experimental design: True and Quasi Experimental.
As you go through this lesson, check also lesson 8 on correlation to remind yourself on how correlation is measured and interpreted.
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Good stuff. Dr makes research easy
Thank you Mwanje for your kind comments
Thank you Doctor. Your sessions are clear, simplified and straightforward.
Thank you. Access all the lessons on www.researchmethodsclass.com/research-methods-course/
Great work Daktari.
Dr. This is great. Simply and Well explained.
Thank you Agnes
Well explanatory with a satisfactory style
Thank you Akano for your kind words. I appreciate it
Thank you Doc for such a great work! This is very helpful.
Thank you Hellen. I have uploaded 79 lessons, access al of them on www.researchmethodsclass.com/research-menthods-class/
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A very Wonderful lesson. Thank you Dr.
Thank you. Access all the lessons on www.researchmethodsclass.com/research-methods-course/
Great discussion
You are doing well madam congrats
Thank you. Access all the lessons on www.researchmethodsclass.com/research-methods-course/
very useful lecture series..can i download this and use the same to some of my students..thank you
Hi Edith. Why do you want to download my notes? Request your students to access the channel. They can access all the notes on www.researchmethodsclass.com/research-methods-course/.
Stanley Kaindu, I want to research methods
Kindly buy the ebook on www.researchmethodsclass.com/ebook/
Hi doc
Continue doing this good work and I declare you are an asset in this country by enlightening our youth . Kindly help get this ppt notes if you dont mind
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Thanks doctor
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This is lesson 12, do we have the first ones, thanks Dr. Lydiah
Hello David. Yes we have from Lesson 1 where we started with understanding what research is. Lesson 2 was on sources of knowledge, lesson 3 on basic elements of scientific research: concepts, constructs, variables etc. All the lessons are on CZcams
Thank you
Thank you. Access all the lessons on www.researchmethodsclass.com/research-methods-course/
what data collection method does ex post facto research use?
Ex Post Facto is a quantitative research design. It therefore uses quantitative methods of data collection: Questionnaires, schedules, tests and examinations. However, if you combine it with another quantitative method (multi-method) or a qualitative method (mixed-method), then you can combine both quantitative & qualitative measurements