Specify the control chart settings including estimation methods, control chart tests, and other analysis settings.
Enter the historical values for the parameters to calculate the center line and control limits. If you do not enter values, Minitab Connect estimates the mean and the standard deviation from the data. If you enter only one value, Minitab Connect estimates the other parameter from the data.
You can also specify the Historical standard deviation within subgroups and the Historical standard deviation between subgroups for an I-MR-R/S chart.
If you want to specify the method that Minitab uses to estimate the standard deviation from your sample data, specify the methods for the Estimation.
For more information on using historical parameters to set the center line and control limits, go to Common tasks using the SPC Tool and select Use historical parameters to calculate the center line and control limits.
From the dropdown list, specify whether you want to use all the subgroups, list the subgroups to omit, or list the subgroups to include.
Use a colon to indicate a range of subgroups. Leave a space between each subgroup or range of subgroups. For example, to specify subgroups 2, 9, 44, 45, 46, and 47, enter 2 9 44:47.
Use this option only if the differences between the subgroup sizes are small. Don't use this option when the difference between subgroup sizes is more than 25%. For example, if the largest subgroup has 10 observations and the smallest subgroup has 8 observations, then the difference is 20% ((10 - 8) / 10 = 0.2 = 20%).
Use the tests to determine which observations to investigate, and to identify the specific patterns and trends in your data. By default, Minitab Connect uses only Test 1. Select additional tests based on company or industry standards.
For more information on changing the test defaults, go to Customize tests for special causes.
Check Marked point label to display the label of a marked point.
Views are created and saved in the Prep Tool . For more information, go to Create a custom data view.
For more information on using a subset of data to set the center line and control limits, go to Use a subset of data to calculate the center line and control limits.
You can change the line colors and styles for each line.
For more information on adding reference lines and marked points, go to Add reference line and marked points.
Specify the capability analysis settings including estimation methods, preferred capability statistics, and other analysis settings.
You can also specify the Historical standard deviation within subgroups and the Historical standard deviation between subgroups for a between/within capability analysis.
If you want to specify the method that Minitab uses to estimate the standard deviation from your sample data, specify the methods for the Estimation.
Select a method for estimating the between-subgroup standard deviation.
Minitab Connect 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, if you want to use a one-sided tolerance of 3σ, enter 6.
Use the tests to determine which observations to investigate, and to identify the specific patterns and trends in your data. By default, Minitab Connect uses only Test 1. Select additional tests based on company or industry standards.
For more information on changing the test defaults, go to Customize tests for special causes.
Check Marked point label to display the label of a marked point.