Parameter and Statistic

Mathematically, a parameter is a numerical variable that takes a value calculated based on information collected from all subjects in a population. You may think of it as a characteristic of a population of your interest such as population mean, variance, or median. A statistic is a numerical variable that takes a value calculated based on information collected from all subjects in a sample.

course webpage

Whenever I teach a course during a session, I prefer to use a html-based course webpage I made instead of the blackboard system which many instructors in Stony Brook university use.