If you have X values that you wish to log transform, then select the ‘ Transform X values using‘ option instead. This will perform a log transformation with the base of 10. Under the ‘ Transform Y values using‘ drop down menu, find and select the ‘ Y=Log(Y)‘ option. In the ‘ Parameters‘ window, click the ‘ Standard functions‘ option under the ‘ Function list‘ header. Ensure the data sets you want to transform are checked in the window on the right, then click the ‘ OK‘ button.ģ. In the new window, select ‘ Transform‘ under the ‘ Transform, Normalize …‘ header. Find the ‘ Analyze‘ button at the top and click on this.Ģ. In this guide, I will show you how to do both by using an example data set of a group of participant ages.ġ.

In GraphPad Prism, log transformation is possible using the base of 10 or 2.

How to log transform (log10 and log2) data in GraphPad Prism By log transforming data, this aids to view the data points more. This may then make the data normally distributed to enable the use of parametric statistical testing.įurther, it is often difficult to see data points on graphs when data are heavily skewed. Log transforming can aid by making highly skewed data less skewed. There are two main principles as to why you would bother to log transform your data: to enable data to conform to normality and to make data visualisation more visible. In this guide, I will show you how to log transform data in GraphPad Prism.

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