Range-bar charts are different from time-based charts because each new bar in a range bar is based on price movement rather than units of time, like minutes, hours, days, or weeks.

The previous example illustrates how you can create median and range charts using raw data (process measurements). However, in many applications, the data are provided as subgroup summary statistics.

You can use the NOCHART2 option in the IRCHART statement to specify that only the individual measurements chart is to be displayed. See Example 34.3 for an illustration. If, instead, you specify the ...