## At A Glance

### Comparing and sampling populations

When we are trying to make a judgement about a population, it is often impractical (or impossible) to observe every member of the population. For example, imaging trying to survey all 300+ million Americans to understand the likely outcome of the next presidential election! Because of this, much of statistics is making estimates about a population based on a random sample. This tutorial introduces you to the idea of what makes a good random sample. I'm sure all of you would enjoy it (but ...

Topics: General Mathematics, Probability, Statistics
Cost: Free

## Overview

### Description

When we are trying to make a judgement about a population, it is often impractical (or impossible) to observe every member of the population. For example, imaging trying to survey all 300+ million Americans to understand the likely outcome of the next presidential election! Because of this, much of statistics is making estimates about a population based on a random sample. This tutorial introduces you to the idea of what makes a good random sample. I'm sure all of you would enjoy it (but I haven't had the time to ask all of you).

### Details

• Days of the Week: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
• Level of Difficulty: Beginner
• Size: One-on-One
• Instructor: Sal Khan
• Cost: Free