If your process has a target value, enter the number. Minitab displays the target value on the capability histogram and the process data table.

Enter a value to specify the percentiles for the spread of the process. The value defines percentiles that correspond to a number of standard deviations from a normal distribution. For example, a value of 6 compares the width of the specification limits to percentiles that include 99.7% of the data because a width of 3σ to either side of the mean in a normal distribution includes approximately 99.7% of the data. A value of 5.15 defines percentiles that include 99% of the data.

Minitab interprets the K value as the width of a two-sided tolerance. If you want to use a one-sided tolerance, enter a two-sided tolerance value that is twice that of the one-sided tolerance. For example, to use percentiles that correspond to a one-sided tolerance of 3σ for a normal distribution, enter 6.

If you want the tolerance value that you enter to be the default setting for every capability analysis that you perform, choose and enter the default tolerance.

Select how you want to display the observed out-of-specification values:

- Parts per million: Display the values in parts per million (PPM).
- Percents: Display the values as percentages.

If you want to change which statistics display by default, choose and change the default display setting.

- Include confidence intervals
- Select to display confidence intervals for the capability indices.
- Confidence level
- Enter a confidence level between 0 and 100. Usually, a confidence level of 95% works well. A 95% confidence level indicates that if you took 100 random samples of the same size from the process, you could expect approximately 95 of the samples to produce confidence intervals that contain the actual value of the capability index for the process (if all the process data could be collected and analyzed).
- Confidence intervals
- Select the type of confidence interval or bound that you want to
display:
- One-sided: Displays upper confidence bounds for PPM or % out-of-specification limits. Use one-sided confidence bounds to be more confident that a PPM or % out-of-specification limits is less than a required value. For example, to be more confident that PPM Total out-of-specification is less than 100.
- Two-sided: Display a confidence interval that has both a lower and an upper confidence bound.

You can enter a new title for the process capability report.