The following example uses the Coating.jmp data table. The quality characteristic of interest is the Weight column. A subgroup sample of four is chosen. An Xchart and an Rchart for the process are shown in Variables Charts for Coating Data.
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Select Analyze > Quality and Process > Control Chart > XBar.

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Click OK.

Note: If an S chart is chosen with the Xchart, then the limits for the Xchart are based on the standard deviation. Otherwise, the limits for the Xchart are based on the range.
Variables Charts for Coating Data
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Rightclick in the XBar of Weight plot and select Chart Options > Box Plots.

Box Plots for Coating Data
The box plots in Box Plots for Coating Data show that the sixth sample has a small range of high values.