Bar Chart: Function of a Variable for Compare Attribute To Continuous Measurements

Use Bar Chart: Function of a Variable to visualize study results and evaluate bias and repeatability by comparing the results of multiple parts to a continuous reference measurement.

This example applies to the Measurement System Analysis Module. For more information, go to www.minitab.com/measurement-system-analysis-module.

Example

With a bar chart, you can plot various different variables and functions depending on your objective.

You can plot the mean or standard deviation of the measurements. In this worksheet, Measurement is the graph variable, and Reference is the categorical variable.

C1	C2
`Reference`	`Measurement`
1.10	1.15
1.20	1.23
1.30	1.31
1.40	1.41
1.10	1.16
1.20	1.24
1.30	1.32

You can plot the sum of the number of acceptances. In this worksheet, Acceptances is the graph variable, and Part or Reference is the categorical variable.

C1	C2	C3
`Part`	`Reference`	`Acceptances`
1	-0.050	0
2	-0.045	1
3	-0.040	2
4	-0.035	5
5	-0.030	8
6	-0.025	12
7	-0.020	17
8	-0.015	20
9	-0.010	20
10	-0.005	20

How-to

Choose Solutions Modules > Capabilities > Measurement System Analysis, then select Launch.
Under Attribute/Inspection Study, select Select an Attribute/Inspection Study.
Select Compare attribute to continuous measurements, then click OK.
Select Bar Chart: Function of a Variable, then click OK.
From Function, select the function of measurement value that you want to graph.
In Graph variables (desktop app) or Y-variable (web app), enter the column that contains the measurement data.
In Categorical variable, enter the column of categorical data that defines the groups. In this case, enter the column that contains the reference values.
Click OK.

Tip

For more information about this analysis, click Help in the main dialog box.