, the study of how to take measurement
s of quantity
. A sub-branch of statistics
, it is essential that all scientist
s have a basic understanding
, so that they know how good their data
An (very simple) example of a sampling problem is: I have an instrument that is accurate to n units. My calculator is accurate to 12 decimal places. I munge the data. How accurate is my result.
Another example is, given some known correlation between homosexuality and other traits, how do I get a representative sample of the population?