Hello. I am doing a study to understand the effects of an experiential learning module on the employable skill development of MBA students. I am doing a quasi experiemental design. I want to know if it is okay to use mean calculation of pretest scores as a basis to divide the groups into control and experimental groups?
Looking forward for answers.
Thank you
Shruti Srinivasan
Good Day;
Different ways can be applied
Mean
Median
Mean+/- 1 SD
Mean+/- 2SD
Mean+/- 1.96 SE
Quartiles (preferred method as 75 percentile "4th quartile = Good)
Quartile extra (might be applied in some studies as 80 percentile "4th quartile = Good)
By my experience in Biostatistics Analysis I consider the mean as POOR tool in analysis as it is HIGHLY AFFECTED by extreme values
Thanks
Hello..
I think you can use the Mean of the pre-test to divide the group into experimental or control. It's fair enough.
Hello, I used to divide the experimental and Control group by mean scores of pre test scores of total subjects
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