Stats Starts Here
What is Statistics?
Statistics is a way of reasoning, along with a collection of tools and methods, designed to help us understand the world.
The W's (Who, What, When, Where, Why, and sometimes
Displaying Quantitative Data
Exercise #14 page 65
The Cornell Lab of Ornithology holds an annual Christmas Bird Count, in which bird watchers at various locations around the country see how many different species of birds they can spot. H
Describing Distributions Numerically
When we think of a typical value, we usually look for the center of the distribution. Where do you think the center of a distribution is?
For a unimodal, symmetric distribution, it's easy.
The Standard Deviation as a Ruler and the Normal Model
To understand how an individual value is from all the values, we standardized the value, finding how many standard deviations the value is away from the mean.
To find thi
Displaying Categorical Data
On the next slide is some of the data about the passengers and crew aboard the Titanic. Each case (row) of the data table represents a person on board the ship. The variables are whether or not the per