GraphPad Prism is a powerful combination of basic biostatistics, curve fitting and scientific graphing in one comprehensive program. More than 100,000 scientists in over 100 countries rely on Prism to analyze, graph and present their scientific data.
What makes Prism the program of choice for many of the world's leading universities, medical centers, research institutes and pharmaceutical companies? Prism certainly has all the capabilities you would expect from a top notch scientific graphics program, but what makes Prism truly unique is not what it does, but how it does it. Designed for the practical scientist, Prism does not expect you to be a statistician. It guides you through each analysis - giving you as much help as you need - and tracks and organizes your work like no other program available. You can concentrate on your data, not fight with your software.
Scientific graphing
Quickly create publication-quality graphs of your data and easily customize every detail. Prism makes a wide variety of 2D scientific graphs, giving you all the features you need - including automatic error bars, log axes, discontinuous axes, Greek letters and much more - to create the look you want. Use Prism's toolbar buttons to instantly send your completed graphs to Word or PowerPoint, or export graphs in a wide variety of formats including high-resolution tif and EPS (Prism 5 only), suitable for publication in any journal.
Once you've created several graphs, arrange them on a page in Prism's unique page layout section. Start with a built-in page layout template, or create your own arrangement using special tools for aligning axes, creating insets and resizing graphs. You can even include analysis results on the same page to summarize your entire experiment for presentations and publications. Prism layouts can be printed at up to 30" x 40", so you can organize and print your poster right from Prism.
Curve fitting
Nonlinear regression is an important tool in analyzing data, but is often more difficult than it needs to be. No other program simplifies curve fitting like Prism. In fact, you can usually fit curves in a single step. Just select an equation from the extensive list of commonly used equations (or enter your own equation) and Prism does the rest automatically -- fits the curve, displays the results as a table, and draws the curve on the graph. Even better, Prism will automatically fit all related data sets at once. You don't have to repeat commands for each experimental condition.
Don't be fooled by the simplicity. Prism also gives you many advanced fitting options - automatically interpolate unknown values from a standard curve (i.e., to analyze RIA data), compare two equations with an F test or Akaike's Information Criterion (AIC), and plot residuals. Prism also lets you fit curves to a family of data sets at once, sharing the best-fit value of selected parameters to find one best-fit value that applies to the entire family, rather than individual best-fit values for each data set. Read more about global curve fitting - an incredibly versatile, but underused analysis technique.
The best way to learn nonlinear regression is to follow examples. The Prism 5 help system is a wonderful resource for learning about curve fitting. Our Guided Examples teach you how to think about nonlinear regression, as well as how to use Prism. All the examples use sample data built-in to the program, so you can easily work through the examples without any tedious data entry. Examples include fitting an enzyme kinetics curve, interpolating from a sigmoidal standard curve, global nonlinear regression and more.
Organizing experiments
Prism brings you a completely new approach in scientific graphing software. Designed by a scientist for scientists, Prism works the way you do. Prism understands the links between data and analyses, and stores your related data, analysis results, graphs, layouts and notes in one efficient project file. Even your most complicated projects stay organized and easy to manage. Unlike other scientific graphics programs, Prism stores all your analysis results along with your data and graphs. And more importantly, Prism remembers exactly how you analyzed your data, even if it required several steps. When you open a Prism file, you can retrace every step of every analysis. Read on to learn more about how Prism can save you valuable time and effort.
Prism system requirements
Prism 5 for Windows runs under Windows 2000, XP, Vista or Windows 7. Prism 5 does not run under Windows 3.1, 95, 98 or Windows NT. Some features with Prism for Windows require Internet Explorer 6 and Flash Player 7 or higher. Prism will run in a screen as small as 800 x 576.
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