# Resources

Explore our educational resources to advance your knowledge of Prism, statistics and data visualization.

### Getting Started with Prism

Master the basics in Prism with short video tutorials.

### Guides

Learn key concepts in stats, curve fitting and data visualization with online guides and articles.

New!

### Prism Academy

Advance your knowledge in statistics and data visualization with our new online learning center.

### QuickCalcs

Run quick statistical tests with free online calculators.

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## Getting Started with Prism

###
Five Things to Know

About Prism

Learn how to use Prism with these five important tutorials

###
Essential Statistics

in Prism

Learn to perform the most common types of analyses

###
Graphing

Basics

Learn how to customize graphs in Prism

###
Statistics

Bootcamp

Learn the fundamentals and perform better analyses

### Explore More Video Tutorials

## Explore Our Guides

### Statistics Guide

A concise guide to doing statistical analyses with GraphPad Prism

### Curve Fitting Guide

A guide to fitting curves (and lines) with GraphPad Prism

### Prism User Guide

Guided examples of common analyses to get you started

## Advance Your Skills with Prism Academy

FREE with a Prism subscription!

- 125+ videos and hours of learning material taught by highly-technical experts
- Exclusive FREE access to Intuitive Biostatistics, the leading biostatistics resource for working scientists
- Interactive quizzes and certifications to test your knowledge and demonstrate expertise
- Improve accuracy interpreting and presenting your research
- Master the art of data visualization and presentation
- Become more efficient and productive using Prism
- Plus much more!

## QuickCalcs

Run statistical analyses quickly and directly in your browser

## Categorical data

Fisher's, Chi square, McNemar's, Sign test, CI of proportion, NNT (number needed to treat), kappa.

## Continuous data

Descriptive statistics, detect outlier, t test, CI of mean / difference / ratio / SD, multiple comparisons tests, linear regression.

## Statistical distributions and interpreting P values

Calculate P from t, z, r, F or chi-square, or vice-versa. View Binomial, Poisson or Gaussian distribution. Correct a P value for multiple comparisons and Bayes.

## Random numbers

Assign subjects to groups, simulate data.

## Chemical and radiochemical data

Create and convert molar solutions, convert moles & grams, radioactivity calculations.

## Explore the Knowledgebase

### Popular Articles

- What is the meaning of * or ** or *** in reports of statistical significance from Prism or InStat?
- What is the difference between ordinal, interval and ratio variables? Why should I care?
- What is the difference between correlation and linear regression?
- 50% of what? How exactly are IC50 and EC50 defined?
- Probability vs. Odds
- The distinction between confidence intervals, prediction intervals and tolerance intervals
- Choosing a Statistical Test
- What does it mean when some results have e in the number?
- Why use n-1 when calculating a standard deviation?

- What you can conclude when two error bars overlap (or don't)
- How to report P values in journals
- Is it better to plot graphs with SD or SEM error bars? (Answer: Neither)
- How to create a 100% stacked column graph
- How do I transpose columns and rows of a Prism data table?
- Graph tip - How to put a gap (or gaps) in an axis
- Graph tip - How can I plot an odds ratio plot, also known as a Forest plot, or a meta-analysis plot?
- Understanding the ANOVA table (SS, df, MS, F) in two-way ANOVA
- How to compare two means when the groups have different standard deviations
- How can I determine an EC90 (or any EC value other than EC50)?