Make the switch to Prism 6
Prism 6 offers more statistical analyses, more kinds of graphs, better learning tools and is more efficient to use. But Prism is still Prism! You can switch to Prism 6 with almost no learning curve, and can try the Prism 6 demo without removing Prism 5. Here are some of the highlights.
New Analyses – ANOVA, multiple comparisons and more
- Two-way ANOVA with repeated measures in both factors.
- Multiplicity adjusted (“exact”) P values for multiple comparison tests. Read more about this #1 request in our blog.
- New post tests - Fisher’s unprotected Least Significant Difference (LSD) and Holm-Sidak.
- Run a set of t tests (one per row) at once, correcting for multiple comparisons with Bonferroni or by contolling the False Discovery Rate (FDR).
- Follow two-way ANOVA with tests for simple or main effects. Don't worry if you don't know what that means - Prism 6 presents those choices graphically so the meaning is obvious.
- Greenhouse-Geisser correction in repeated measures one-way ANOVA to avoid the need to assume sphericity.
- Grubbs’ outlier detection. Our most popular QuickCalc web calculator is now part of Prism.
- Kolmogorov-Smirnov test to compare two groups (an alternative to the Mann-Whitney test).
- Ratio t test
Improved curve fitting
- Fit to implicit and differential models.
- Write more complex models.
- Quicker interpolations. Prism 6 adds a new analysis that streamlines the process of interpolating values from standard curves.
- Weight your fit by 1/Y^k
- Monte-Carlo simulations without writing scripts.
Pie charts and more
- Prism 6 adds a new kind of data table for parts of whole data. Plot pie charts, donut plots and more.
- Compare the observed distribution of values with theoretically expected values with the chi-squared or binomial test.
- Compute each value as a fraction or percentage of the column total.
Work with larger data sets
- Enter data in up to 256 data set columns.
- Enter up to 256 subcolumns per data set (up from 52 in Prism 5). This lets you compute repeated measures two-way ANOVA with more subjects.
Work more efficiently
- Faster. Faster saving, faster closing, faster nonparametric calculations, faster graphing, faster, crisper screen redraws.
- Format several data sets at once. Want to plot alternating columns as dotted lines? Now you can do it in one step.
- View and edit all of your column titles at once. Great for large files!
- Choose the size, shape and color of your data points right from the data table. You can even select any contiguous block of data and make choices for that specific subset of your data table.
- WAND. If you love MAGIC, you will love the new WAND. While MAGIC reformats graphs, the WAND analyzes and graphs a new data table to match what you have done to another.
- Paste link values from results tables into a data table so everything updates automatically. This also works if you want to link data from one data table to another.
More ways to customize your graphs and layouts
Plays well with others
- Export graphs in more formats.
- Better TIFF compression means smaller files and faster exporting.
- Import more types of graphic files into your Prism layouts.
- Control whether to use periods or commas as a decimal separator from within Prism.
- Choose how to handle excluded values when you export/paste from Prism data tables.
- If you use LabArchives, you can now open your Prism files right from LabArchives without first downloading the files to your computer. Prism 6 files are fully searchable within LabArchives. Remember that Prism users can get a free LabArchives account.
OverviewGraphPad Prism, available for both Windows and Mac computers, combines scientific graphing, comprehensive curve fitting (nonlinear regression), understandable statistics, and data organization.
Nonlinear regressionNonlinear 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, draws the curve on the graph, and interpolates unknown values.
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Understandable statistics
While it won't replace a heavy-duty statistics program, Prism lets you easily perform basic statistical tests commonly used by laboratory and clinical researchers. Prism offers t tests, nonparametric comparisons, one- and two-way ANOVA, analysis of contingency tables, and survival analysis. Analysis choices are presented in clear language that avoids unnecessary statistical jargon. |
Unlike other programs, Prism provides understandable statistical help when you need it. Press "Learn" from any data analysis dialog and Prism's online documentation will explain the principles of the analysis to help you make appropriate choices. Once you've made your choices, Prism presents the results on organized, easy-to-follow tables. The Prism documentation goes beyond anything you would expect. More than half of it is devoted to thorough explanations of basic statistics and nonlinear curve fitting, to teach you what you need to know to appropriately analyze your data. |
Analysis checklistsOnce you’ve completed the analysis, Prism’s unique analysis checklists help you make sure you chose an analysis appropriate for your experimental design, and that you understand the assumptions behind the analysis.
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Retrace every analysis
It isn’t really science unless you can document exactly how your data were analyzed. WIth Prism this isn’t a problem. You’ll never wonder how the results got there. Even if the work was done by someone else, you can review (and change) all analysis choices, and see the sequence of analyses (i.e. that the X values were transformed to logarithms before the curve was fit). Similarly, you can easily check if error bars represent the SD or SEM (or something else). |
Automation without programming
All parts of your Prism project are linked. This means that when you fix a data entry error, Prism automatically updates all results, graphs, and layouts. Another advantage is that you can instantly analyze a repeat experiment. After you’ve polished the analysis and graphing steps with data from one experiment, you don’t have to repeat all those steps. Prism provides several ways to recycle your work -- to instantly analyze and graph a repeat experiment, without repeating any tedious steps and without requiring any scripting or programming. |
Automatic error bars
If you computed error values elsewhere, enter them into labeled (SD or SEM) subcolumns. Prism’s analyses (i.e. t test, ANOVA, regression) will take into account the SD (or SEM) and sample size. |
A complete record of your work
A Prism project file can contain more than data, analyses and graphs. A Prism file can be a complete record of your experiments. Each file can contain any number of data tables, info pages, analysis results, graphs, and page layouts. Data tables can contain not only the data you analyze and graph, but also the data you decided to exclude, which remain on the data table (in blue italics). Each info page can store both unstructured notes and structured info constants such as lot numbers, concentrations, notebook page numbers, etc. Graphs and layouts can be embellished with text, lines, arrows, boxes, tables, equations, pictures and more. Annotate any page with color-coded floating notes, and highlight the names of pages you want to look at again, or want someone else to review. Save Prism files on your computer or network or save directly to LabArchives, a cloud-based laboratory notebook. |
Ready to publishPrism takes you from raw data to a graph (or layout) ready for presentations, posters or publications. A single click sends completed graphs or layouts to PowerPoint or Word. Copy and paste works too, of course. Export to TIFF, EPS, JPG, or PDF (and more), with all the options you need to satisfy the requirements of scientific journals. |
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