A Short Guide to Action Research 4 th Edition. Andrew P. Johnson, Ph.D. Minnesota State University, Mankato www.OPDT-Johnson.com. Chapter 8: Quantitative Design in Action Research. Quantitative research is based on the collection and analysis of numerical data
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Andrew P. Johnson, Ph.D.
Minnesota State University, Mankato
Quantitative research is based on the collection and analysis of numerical data
1. correlational research
2. causal–comparative research
3. quasi-experimental research
a. mode - score that is attained most frequently
b. median - 50% of the scores are above and 50% are below
c. mean - the arithmetic average
Range = the difference between the highest and lowest score
Variance = the amount of spread among the test scores
standard deviation = how tightly the scores are clustered around the mean in a set of data
Scores with a Large Variance