X-bar and R Chart Example 1 (R)

Notes and Considerations

Based on section 5-2.2 "Development and Use of X-bar and R Charts" in Statistical Quality Control (Montgomery).

This example uses the "qcc" library for the R statistical software system.

Data Set

The data is available at the bottom of the reference page

File: Table 5-1 Flow Width.csv

(may also be found in file: Chapter_5_Examples.xls)

Table 5-1 "Flow Width Measurements (microns) for the Hard-Bake Process".

Analysis or Script File

See the R script file attached at the bottom of this page. [Example 1 X-bar and R chart (R).R.txt]

For a basic overview of how to conduct the analysis and generate the X-bar and S chart, see the document attached at the bottom of this page.

[Example 1 X-bar and R chart (R).doc]