Statistics Formulas

Find all the formulas you need to tackle any data set. Learn to calculate standard deviation, evaluate factorials, and make sense of statistical symbols.

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What Is a Table of Random Digits in Statistics?

Calculating Z-Scores in Statistics

Worksheet for Chebyshev's Inequality

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Challenging Counting Problems and Solutions

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Probability of the Union of 3 or More Sets

Formula for calculating the margin of error for an confidence interval of a population mean

Margin of Error Formula for Population Mean

The sum of squares formula shortcut allow us to find the sum of squared deviations, without first calculating the mean.

Sum of Squares Formula Shortcut

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How to Calculate the Variance of a Poisson Distribution

The graph of a standard normal distribution showing the location of z on the bell curve

Standard Normal Distribution in Math Problems

integral for calculating the median m of a random variable

Exponential Distribution Medians

Sets

How Many Elements Are in the Power Set?

Formula for expected value

The Formula for Expected Value

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Examples of Uncountable Infinite Sets

The Chi-Square Statistic Formula and How to Use It

The formula used to standardize a normal distribution depends upon the mean and standard deviation.

Z-Score Problems and Explanations

Multiple glasses of champagne evenly poured.

Using the Standard Normal Distribution Table

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Levels of Measurement Worksheet With Solutions

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How to Derive the Formula for Combinations

A splash at Lake Michigan forms a bell curve

Formula for the Normal Distribution or Bell Curve

Formula for Student's t distribution.

Student's t Distribution Formula

Histogram of a binomial distribution.

Binomial Table for n= 10 and n=11

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What Courses Do You Need to Take for a Statistics Degree?

Binomial Table for n=7, n=8 and n=9

A histogram of a binomial distribution

Binomial Table for n = 2, 3, 4, 5 and 6

Generalized addition rule for probability

Addition Rules in Probability

3D rendering of gamma function.

Calculations With the Gamma Function

The formula for combinations can be written by using three factorials.

Worksheet on Combinations and Permutations

Z score formula

Z-Score Formula

Bell shaped curves could be from a standard normal distribtion or a t-distribution.

Student t Distribution Table

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