Harvard Biostatistics Multiple Lecture Courses

** Source:**
Statistics at Square One (BMJ online)

** How to access:**
This is free to access from the above link.

** Contents:**
This is one chapter in Statistics at Square One (online).
This section discusses two-sample t-test, Welch's test (i.e. unequal variance between groups) and one-sample t-test (paired data).

** Example(s) used in this:**
Transit time food through the gut

**Prior math/stat knowledge to fully understand matrials:**
t-distribution, hypothesis testing. Those are also covered in this online book. Thus, no prior statistical or mathematical knowledge would be required, if the previous sections of this online book are referred.