GraphPad Software, Inc.Ģ 1999 GraphPad Software, Inc.ġ Analyzing Data with GraphPad Prism A companion to GraphPad Prism version 3 Harvey Motulsky President GraphPad Software Inc.Each analysis offers a checklist to assist you understand the required statistical assumptions and confirm you have selected an appropriate test.Īt nearly every stage, access hundreds of web pages from the on-line Prism Instructions. GraphPad Prism, Prism and InStat are registered trademarks of GraphPad Software, Inc. GraphPad is a trademark of GraphPad Software, Inc. Use of the software is subject to the restrictions contained in the accompanying software license agreement. Motulsky, Analyzing Data with GraphPad Prism, 1999, GraphPad Software Inc., San Diego CA, Acknowledgements: The following individuals made substantial contributions towards development of this book: Arthur Christopoulos (Neuroscience Research in Psychiatry, Univ. Pharmacology, Vanderbilt University), Rick Neubig (Dept.
Michigan), Paige Searle (Vice-president GraphPad Software).
How to reach GraphPad: Phone: ( before June 12, 1999) Fax: ( before June 12, 1999) Web: Mail: or GraphPad Software, Inc Oberlin Drive #110 San Diego, CA USA Contents Preface.2 Introduction to statistical comparisons.3 Garbage in, garbage out.3 When do you need statistical calculations?.3 The key concept: Sampling from a population.4 Confidence intervals.8 P values.9 Hypothesis testing and statistical significance Statistical power A Bayesian perspective on interpreting statistical significance Beware of multiple comparisons Outliers Analyzing one group.23 Entering data to analyze one group Frequency distributions Column statistics Interpreting descriptive statistics The results of normality tests The results of a one-sample t test The results of a Wilcoxon rank sum test Row means and totals t tests and nonparametric comparisons.39 Introduction to comparing of two groups Entering data to compare two groups with a t test (or a nonparametric test) Choosing an analysis to compare two groups The results of an unpaired t test The results of a paired t test The results of a Mann-Whitney test The results of a Wilcoxon matched pairs test One-way ANOVA and nonparametric comparisons.65 Introduction to comparisons of three or more groups Choosing one-way ANOVA and related analyses The results of one-way ANOVA The results of repeated measures one-way ANOVA The results of a Kruskal-Wallis test The results of a Friedman test Two-way analysis of variance.93 Introduction to two-way ANOVA Entering data for two-way ANOVA. #Graphpad prism 4 free software license#.
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