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Purrmew
I have a BS in Biology with a concentration in Microbiology. I currently work as a Medical Technologist in a microbiology lab at a children's hospital. I am currently a graduate student earning my Master of Public Health in Infectious Disease Epidemiology. My expertise is primarily in infectious diseases and bacteria.
When to use a matched pairs instead of a one-sample t-test with H0 = 0?
The data is two sets of values: "before" and "after" some kind of treatment or intervention on a group of subjects. Example:
Subject_____1_____2_____3_____4
Before______20____15____17____20
After_______30____10____17____25
Why would you use a matched-pairs test instead of a one-sample t-test where you calculate the mean difference between the before and after score and compare it to a "population" where there is no difference (mu = 0). In other words, H0: mu = 0 and Ha: mu ≠ 0
Thanks!
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