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Paired data arise when an experimental or observational study design deliberately samples two units as a dyad to form a basis of comparison. Use this tag for any question about paired data or their analysis.
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Paired sample (SD and SE)
In some publications, there is no information on whether the data is based on standard deviation (SD) or standard error (SE). For example, in one publication, they wrote: “Mean injection intervals bef …
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Paired sample (data) with unequal sample size
I am reading a publication in which the author mentioned that they used the paired t-test. In their study, a questionnaire was provided to a group of people before and after surgery to check the effic …