P/S

Question 1

Regression to the mean

Answer 1

if the measurement is too extreme, second measurement will be closer to the mean. Repeated testing that leads to too extreme measurements becoming more normal is called regression toward the mean.

Question 2

Cross sectional-study

Answer 2

look at a group of different groups of people (ex: a population) at a specific point in time

ex: study that looks at a prostate cancer rates between 20 y/o, 50 y/o, and 80 y/o

Question 3

Longitudinal study

Answer 3

data is gathered for the same subjects repeatedly over a period of time. Subjects don’t necessarily