Data considerations for Variability Chart

To ensure that your results are valid, consider the following guidelines when you collect data, perform the analysis, and interpret your results.

The response should be numeric
To calculate the mean response at different factor levels, variability charts require numeric response data.
You can have up to 8 factors
You can have up to eight numeric, text, or date/time factors. Each factor should have at least 2 levels.
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