If you’re looking for help with probability and statistics, you’re in the right place. StatisticsHowTo.com has a comprehensive database of articles covering all the material you’re likely to find in an AP statistics, elementary statistics or college statistics class. Several hundred articles include short, how-to videos that you can also find on our YouTube Channel.

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### Probability and Statistics Topic Indexes

- Basic Statistics.
- Bayesian Statistics and Probability
- Descriptive Statistics: Charts, Graphs and Plots.
- Probability.
- Binomial Theorem.
- Definitions for Common Statistics Terms.
- Critical Values.
- Hypothesis Testing.
- Normal Distributions.
- T-Distributions.
- Central Limit Theorem.
- Confidence Intervals.
- Chebyshev’s Theorem.
- Sampling and Finding Sample Sizes.
- Chi Square.
- Online Tables (z-table, chi-square, t-dist etc.).
- Regression Analysis / Linear Regression.
- Non Normal Distributions.

### Technology Topic Indexes

- Online calculators.
- Microsoft Excel for Statistics.
- TI 83 for elementary statistics.
- Using the TI 89 for statistics.
- SPSS Statistics.
- Statistics Help.
- What is the best calculator for statistics?

## Misc.

## What is Probability and Statistics?

Probability and Statistics usually refers to an introductory course in probability and statistics. The “probability” part of the class includes calculating probabilities for events happening. While it’s usual for the class to include basic scenarios like playing cards and dice rolling at first, these basic tools are used later in the class to find more complex probabilities, like the probability of contracting a certain disease. The “statistics” part of probability and statistics includes a wide variety of methods to find actual statistics, which are numbers you can use to generalize about a population. For example, you could calculate the height of all your male classmates and find the mean height to be 5’9″ — this is a statistic. But then you could take that statistic and say “I think the average height of an American male is 5’9″ “. How accurate your guess is depends on many factors, including how many men you measured and how many men are in the entire population. Statistics are useful because we often don’t have the resources to measure, survey or poll every member of a population, so instead we take a sample (a small amount).

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*Statistical concepts explained visually* - Includes many concepts such as sample size, hypothesis tests, or logistic regression, explained by Stephanie Glen, founder of StatisticsHowTo.

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