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## Overview

In this topic we’re going to look at the basics of descriptive measures. I want you to know what they are, how to compute them (on your calculator and in a spreadsheet), and how they can be used to estimate a set of population parameters. And super importantly, I also want you to know how to come up with corresponding estimate of the uncertainty of the most common parameters using the so-called standard error. Most people can’t do the latter or they get confused in the process, so we’re going to dig deep and really make sense of it.

### Directions

1. If you’re in my class, make sure you’re there for our discussion-based lectures.

2. Work your way through the lessons and self-assessments below.