A handy statistical measure that tells you how good your model is at explaining variations in the dependent variable β like finding out how much your cupcake recipe affects the scrumptiousness of the cupcakes!
A representative sample is a small subset of a population that accurately reflects the characteristics of the larger group, perfecting statistical analysis while balancing activity and amusement!
Sampling is like a small tasting menu at a fine restaurant β it allows you to get a sense of the offerings without having to commit to the full meal.