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Probability and Statistics Topics

Probability and Statistics explanations, examples, practice problems. Ready? Let’s do this.

Types of Data

The Merriam-Webster dictionary says that data is "factual information used as a basis for reasoning, discussion, or calculation." If we observe something and write down what we observe, we're gathe...

Analysis of Single-Variable Data

Univariate, or single-variable, data is usually given as a list of numbers. It's the type of list you'd take with you to the store if you had to go number shopping and were afraid you would forge...

Pictures of Single-Variable Data

Who doesn't like pictures? Nobody! There's only one little thing we need to cover before we get to the good stuff, though:ListsOne simple way to look at single-variable data is to write it down i...

Bivariate Data

Bivariate data is data where two values are recorded for each observation (as opposed to univariate data). We could look at a bunch of cars in a parking lot, write down both their manufacturers a...


So far, we've been playing with a bunch of statistics topics. Now it's time to move on to something that'll help you win at cards and games of chance: probability.Probability is where we find the w...

Factorials, Permutations, and Combinations

To find probabilities of more complicated events, we'll need some more powerful ways of counting things. Sit down and buckle up, because stuff's about to get real.

In the Real World

As for the statistics part, you can actually make a living out of doing statistics. In fact, there are even statistics about statisticians.As for probability, here's a fun yet oddly practica...