You randomly pick 5 muffins from different trays. This is your sample . If you only picked from the top tray, your data might be biased.
You taste them. Four out of five are completely tasteless. Statistical Inference
Statistical inference is essentially the art of making an educated "leap of faith" from the small group you see (the ) to the massive group you don't (the population ). The Story: The Baker’s Mystery Batch You randomly pick 5 muffins from different trays