Probability and Statistics Index > IBM SPSS Statistics > How to Make a Boxplot in SPSS

A boxplot, sometimes called a box and whisker diagram, shows the spread and centers of a data set like the interquartile range(IQR). When you view a boxplot in SPSS, it’s much easier to see how your data is centered or spread out, as opposed to looking at a list of data. SPSS allows you to create two types of boxplots: simple and clustered. Which type of boxplot you choose depends upon how many variables you want to plot. Choose the **simple chart **option when you want to create a plot of one variable, and choose the **clustered boxplot **option if you want to create a comparison of variable types. SPSS boxplots can be created in the Chart Builder or in the Legacy Dialogs menu.

## Boxplot in SPSS: Steps

Watch the video to see how to make a boxplot in SPSS using the Chart Builder or read the steps below for a slightly different way to make a boxplot in SPSS, by using the legacy dialog.

Step 1: **Open an existing worksheet** with your data or type your data into a new worksheet.

Step 2: **Click “Graphs,” then click “Legacy Dialogs” and then click “Boxplot.”**

Step 3: **Click the type of chart you want to display**, either Simple or Clustered, then click a radio button for either summaries of groups or separate variables.

Step 4: **Click “Define”** to open the “Define Simple Boxplot” dialog box.

Step 5: **Click a variable in the left window **that you want to see medians and IQRs for. This is the analytical variable, the one that will be displayed on the y-axis. Click the top arrow to move the variable to the “Variable” window.

Step 6: **Click a second variable in the left window **that you want to display on the x-axis (the categorical variable), then click the second arrow down, to the left of Category Axis.

Step 7: **Click “OK” to display the boxplot.**

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How does one show the number of samples on the box plot. ie n=

I don’t think it’s possible.