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. Imagine trying to survey all 300+ million Americans to understand the likely outcome of the next presidential election! Because of this, much of statistics is collecting data from a representative and random sample. From the data collected from this random s

Reasonable samples

Valid claims

Making inferences from random samples

Comparing distributions with dot plots (example problem)

Comparing distributions