Enter your Sign-on user name and password.

Forgot password?
  • Follow us on:
Loading video...

Start Learning Now

Our free lessons will get you started (Flash® 10 required).
Get immediate access to our entire library.

Sign up for Educator.com

Features Overview

  • Get on-demand access to our complete library
  • Search and jump to exactly what you need to learn
  • Track your progress
  • Download practice and lesson files
  • *Ask questions and get answers from our community & instructors

Exploring Categorical Data

  • Categorical data can be summarized into a frequency table.

  • Contingency tables can be used to find marginal, conditional, and joint probabilities of events.

  • Joint probability in a contingency table is the total of the intersection of the two events divided by the total number of observations.

Exploring Categorical Data

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

Mathematics: AP Statistics