# Statistics

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## What Is a One-Tailed Test?

One-tailed tests of significance occur throughout statistics when our alternative hypothesis contains an inequality.

## What Is the Trichotomy Property?

The trichotomy property in mathematics is important because of what is says about ordering of the real numbers.

## Example of an ANOVA Calculation

One factor analysis of variance (ANOVA) is a useful statistical tool. See the worked out details of a sample ANOVA calculation.

## How to Calculate the Rank Correlation Coefficient

See three examples of how to calculate Spearman's rank correlation coefficient.

## What Is the Rank Correlation Coefficient?

Spearman's rank correlation coefficient can be used to analyze the agreement between two sets of rankings of the same list.

## Use of the Median with the Runs Test

The median can be used with the runs test when we have quantitative data.

## What Is a Paired Difference?

Paired differences arise in statistics when working with paired data. See how to form a paired difference and why we use these.

## Pascal, Fermat and the Birth of Probability

Learn more about the beginnings of probability when Pascal and Fermat teamed up to solve a problem involving dice.

## Common Maclaurin Series

See formulas for some of the most common Maclaurin Series

## What Are Maclaurin Series?

Maclaurin Series use the derivatives of a function as coefficients in a power series. They can be used for a number of applications.