Richland Community College
Richland Community College: Probability Definitions
This site, which is provided for by the Richland Community College, gives a list of probability definitions.
Maths Challenge
Maths challenge.net: Counting Triangles
A "one star" geometry problem that requires finding the visual pattern and applying logic with pattern recognition to solve this number of triangles problem.
Other
Fayetteville State University: Hypothesis Testing
A page from the university's statistics site which builds on the standard errors from the Central Limit Theorem previously explained. Here hypothesis testing is defined and validated.
Other
Westgard Qc: Hypothesis Testing
A good description of hypothesis testing. Refers to the null hypothesis as a "straw man" that is either left standing or knocked down. Other links are provided to related parts of the topic.
ClassFlow
Class Flow: Proof Algebra
[Free Registration/Login Required] Students prove interesting numerical patterns by applying their number sense.
Math Is Fun
Math Is Fun: Probability Line
A good explanation of the probability of events, using probability lines in the examples.
Interactive Mathematics
Interactive Mathematics: Counting and Probability
An introduction to the concept of counting and probability includes working with factorials and finding the probability of an event.
Shmoop University
Shmoop: Basic Statistics & Probability: Factorials
The probability resource investigates factorials. Students learn about the topic through notes and examples. The tutorial consists of practice exercises to check for comprehension of the concept.
That Quiz
That Quiz: Probabilidad
Test your knowledge of probability by taking this practice test. Five levels are provided and it also tracks the number of correct and wrong answers.