Graph tip - How to make a grouped box and whiskers plot.

This example shows two ways to make a box and whiskers plot, with column data or with grouped data.

Column graphs - one grouping variable

Start with a Column graph data table.

Enter all the replicates for each data set in a separate column. 5 data points is the minimum needed to calculate a basic five-number summary (minimum, first quartile, median, third quartile, and maximum) for a Tukey boxplot.

When prompted to create your graph, navigate to the 'Box and violin' tab and select 'Box & whiskers'. The Min to Max boxplot is selected, which is similar to a Tukey's boxplot except the whiskers go to the minimum and maximum values. 

Here is your graph:

Grouped graphs - two grouping variables

Prism can also create grouped box-and-whisker graphs.

Start by making a grouped data table. Choose to enter a single Y value, replicate values, or mean and error values. In this example, we enter 6 replicate values. 5 relicates is the minimum needed to calculate a basic five-number summary (minimum, first quartile, median, third quartile, and maximum) for a Tukey boxplot. The Min to Max boxplot is selected, which is similar to a Tukey's boxplot except the whiskers go to the minimum and maximum values. 

Enter your data as below with side-by-side replicates.

When prompted to create your graph, navigate to the 'Box and violin' tab and select 'Interleaved box & whiskers'.

Here is your graph: