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This is achieved by dragging the slider left or right. The next step when removing outliers in GraphPad is to determine how aggressive you want to be in the process. How aggressive should you be in outlier removal? It is advised to avoid using this method altogether. It does so by simply repeating the Grubbs’ method using the cleaned data to detect a further outlier and repeats the process until no further outliers are present. The Iterative Grubbs’ method is based on the prior namesake, but can detect more than one outlier. It is recommended to only use the Grubbs method when you are certain your data contains either one or no outliers. Alpha is similar to the Q value in the ROUT method. The Grubbs’, also known as the Extreme Studentized Deviate, method can only identify a single outlier.įor the Grubbs’ method you specify an alpha, rather than a Q, value. It is recommended to use the ROUT method when wanting to detect multiple outliers. Think of this value as being the maximum percentage of outliers that are false. To learn more about the ROUT method, have a read of the published manuscript.įor this method, Q is specified. ![]() This method was developed by GraphPad and is based on the False Discovery Rate (FDR). The ROUT method can be used to find any number of outliers. So, ensure to test your data for normality in GraphPad before proceeding. Note that these methods assume your data has been sampled from a Gaussian distribution. WHAT IS GRAPHPAD PRISM USED FOR SOFTWAREBoth the student and the authorising department must sign the student software licence request form (.pdf, 141KB).There are 3 methods available in GraphPad to identify and remove outliers: ROUT, Grubbs’ and Iterative Grubbs’. Postgraduate students can only use GraphPad Prism software on their own personal computer.ĭepartments must order the GraphPad Prism software for their postgraduate students. ![]() Staff also need to complete and submit a Work at Home application form to ITS (.pdf, 70KB) if they wish to use GraphPad Prism software on their home computer. Please complete the Software Order online form on the software licence order forms page to order GraphPad Prism software from ITS. Ordering GraphPad Prism software through ITS University Departments The cost of GraphPad Prism software is $58.00 per computer, per year Prices for GraphPad Prism software University Departments The licence period is 1 January to 31 December.
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