Floating Point Error Graphpad
says "all licenses are in use". (1) PDF files of GraphPad help and manuals(2) When I install Prism 2 for Mac, why does the system keep asking me to swap disks? (4) How can I replace a damaged CD (or disks)?(5) How do I uninstall Prism?(6) Why is my project file sometimes opened in an older version of Prism instead of the current version? (7) Prism (or InStat or StatMate) won't accept my serial number, or name, or institution name.(8) What does a "CRC error" message mean? (9) I'm installing Prism on a network. How can I write-protect the Prism folder? (10) Why can't I access Help in Prism? (12) Does GraphPad offer training classes in Prism? (13) How can I choose colors and fill patterns for individual bars in a bar graph?(15) How do I reverse an axis?(16) Why are my data plotted with a connecting line, but no symbols?(17) Exporting a Prism graph or layout as a high-resolution TIFF image?(18) Using Prism 2 Mac, why do I see a gray background behind Y axis titles (or double images)?(20) How can I plot data with a point-to-point line, but not have lines through the data points on the legend?(22) How can I control which graph symbols or lines overlie--and therefore cover up--those for other data sets?(23) Why does Prism sometimes label every value on a log10 axis (1, 10, 100..), and other times every other value (1, 100, 10000..)?(24) How can I put graphs from two different files onto the same page layout?(25) Prism 3 (Windows) used to work fine, but now it crashes repeatedly. Why? (26) Why does Prism 3 (Windows) freeze or crash when I work on a graph or layout? (29) Why does Prism (versions 3 and earlier for Windows) sometimes crash when I try to open a file, create a new file, or save a file? (30) Why does Prism display "interrupted" rather than results of a curve fit?(31) When I click the option box to compare two equations, why don't I see radiobuttons to select equation 1 and 2?(32) How can I obtain linear regression results from Prismwith only two XY pairs? (33) Why does Prism report the standard error for logEC50, but not for the EC50 itself, when it fits dose-response curves?(34) Where are my standard curve results?(35) Why is my regression line too short (or too long)?(36) How can I make each point on my graph a different color or shape, but fit a curve to all the points?(37) Can Prism create Receiver-Operator Curves?
Graphpad.com FAQs Find ANY word Find ALL words Find EXACT phrase Fixed bugs: Incorrect P values from Fisher's Exact test or chi-square test FAQ# 1514 Last Modified 10-August-2009 Bug 1: In Prism 5, and 6.00, 6.01, 6.0a and 6.0b, the one-sided P value is sometimes reported as "undefined". This only happens when you request a one-tail P value andif (A div B) = 1 and (C div D) = 1, or (A div C) = 1 and (B div D) = 1, where div is the operation of integer division (e.g. 9 div 6 = 1). Will fix in 6.02 and 6.0c. In most cases, this happens when the P value would be large, but you cannot rely on this. The P value might be small. If the P value is reported, it is http://graphpad.com/faq/faq_index.cfm correct. The problem is that rarely, Prism reports "undefined" instead of a P value. Bug 2: With huge numbers, P value can be wrong (fixed in 6.00 and 6.0a) You enter four values, which we label like this: A B C D If the product of B times C is huge, Prism will encounter a math error and report an incorrect value for chi-square and P, but no error message. This only happens when the product of B times C exceeds2,147,483,648. With such large https://www.graphpad.com/support/faqid/1514/ numbers, Prism won't do a Fisher's test even if you ask for it, but does the chi-square instead. This bug is in Prism 3-5, but fixed in 6.00 and 6.0a. You can bypass this bug, in most cases, by swapping the two columns. Only if the product of A times D is also huge will this strategy not work. Bug 3: With large samples, P value is always two-tailed (fixed in 5.03 and 5.0c) When the sample sizes are large, the exact Fisher calculations would be slow, so Prism switches to perform the chi-square test instead. When this happens, Prism (up to 5.03 and 5.0c) always reported a two-tail P value, even if you requested a one-tail P value. Fixed in 5.04 and 5.0d. Bug 4: P too low rarely in 5.02 and 5.0b(fixed in 5.03 and 5.0c) Prism 5.02 (Windows) and 5.0b (Mac) included a fix to a trivial bug in Fisher's exact test (when the two groups are identical, the P value should be 1.00 but earlier versions of Prism sometimes reported P values slightly greater than 1.0). Unfortunately, that fix introduced a new bug described here: The bug occurs only when: You are using Prism 5.02 (Windows) or 5.0b (Mac). Earlier versions did not have this bug. Neither does InStat 3.0 or 3.1. You have entered a symmetrical contingency table. A table is symmetrical when either the two row totals are identical, or the two column totals are identical. You have chosen a
von GoogleAnmeldenAusgeblendete FelderBooksbooks.google.de - Most biologists use nonlinear regression more than any other statistical technique, but there are very few places to learn https://books.google.com/books?id=g1FO9pquF3kC&pg=PA320&lpg=PA320&dq=floating+point+error+graphpad&source=bl&ots=m0UaafcF2k&sig=LZ33bhqb2aVei1jZGh4mWVptXCY&hl=en&sa=X&ved=0ahUKEwja7pGkjtfPAhXKpR4KHVAgDq0Q6AEIOjAF about curve-fitting. This book, by the author of the very successful Intuitive Biostatistics, addresses this relatively focused need of an extraordinarily broad range of scienti...https://books.google.de/books/about/Fitting_Models_to_Biological_Data_Using.html?hl=de&id=g1FO9pquF3kC&utm_source=gb-gplus-shareFitting Models to Biological Data Using Linear and Nonlinear RegressionMeine BücherHilfeErweiterte BuchsucheE-Book kaufen - 28,66 €Nach Druckexemplar suchenOxford University PressAmazon.deBuch.deBuchkatalog.deLibri.deWeltbild.deIn Bücherei suchenAlle Händler»Fitting Models to floating point Biological Data Using Linear and Nonlinear Regression: A Practical Guide to Curve FittingHarvey Motulsky, Arthur ChristopoulosOxford University Press, 27.05.2004 - 352 Seiten 0 Rezensionenhttps://books.google.de/books/about/Fitting_Models_to_Biological_Data_Using.html?hl=de&id=g1FO9pquF3kCMost biologists use nonlinear regression more than any other statistical technique, but there are very few places to learn about curve-fitting. This book, by floating point error the author of the very successful Intuitive Biostatistics, addresses this relatively focused need of an extraordinarily broad range of scientists. Voransicht des Buches » Was andere dazu sagen-Rezension schreibenEs wurden keine Rezensionen gefunden.Ausgewählte SeitenTitelseiteInhaltsverzeichnisIndexVerweiseInhaltPreface12 A Fitting data with nonlinear regression13 B Fitting data with linear regression47 C Models58 D How nonlinear regression works80 E Confidence intervals of the parameters97 F Comparing models134 G How does a treatment change the curve?160 H Fitting radioligand and enzyme kinetics data187 I Fitting doseresponse curves256 J Fitting curves with GraphPad Prism296 Annotated bibliography348 Index350 Urheberrecht Andere Ausgaben - Alle anzeigenFitting Models to Biological Data Using Linear and Nonlinear Regression: A ...Harvey Motulsky,Arthur ChristopoulosEingeschränkte Leseprobe - 2004Fitting Models to Biological Data Using Linear and Nonlinear Regression: A ...Harvey MotulskyKeine Leseprobe verfügbar - 2004Fitting Models to Biological Data Using Linear and Nonlinear Regression: A ...Harvey MotulskyKeine Leseprob