I have a total population of several hundred houses, which have different sizes, prices, and ages.
I want to be able to select a random sample, of a few dozen or so houses, and test how representative they are of the entire portfolio. Critically, I want the comparisons to be across all the variables, not just comparing prices for example. Is there some sort of test which will give me a P value on how confident I am that my random sample is representative of the portfolio?
I'm sure this is probably a trivial question, but I'm a novice statistician, and was hoping for some advice on the best way to do this.
Thank you kindly.