What is the meaning of * or ** or *** in reports of statistical significance from Prism or InStat?
Choose P value Format Starting with [...]
How can I determine an EC90 (or any EC value other than EC50)?
The potency of a drug is commonly quantified as [...]
How to compare two means when the groups have different standard deviations.
The t test assumes equal variances The standard unpaired [...]
The ANOVA table (SS, df, MS, F) in two-way ANOVA
You can interpret the rsults of two-way ANOVA by looking [...]
Graph tip – How can I plot an odds ratio plot, also known as a Forest plot, or a meta-analysis plot?
This example shows how to make an odds ratio [...]
How do I transpose columns and rows of a Prism data table?
Transposing means that every row becomes a column, and [...]
How to create a 100% stacked column graph
Excel uses the term "100% stacked column" graph to refer [...]
Is it better to plot graphs with SD or SEM error bars? (Answer: Neither)
There are better alternatives to graphing the mean with [...]
How to report P values in journals
When you write up your results, how should you report [...]
What you can conclude when two error bars overlap (or don’t)
It is tempting to look at whether two error [...]
