• ggQC

    Control Charts with ggQC: XbarR

    XbarR charts are useful when monitoring a continuous process over time and your taking multiple samples in a given period. Some examples might include, the first, middle, and last parts coming off an assembly line, subgroups of molded parts produced several at a time over several cycles, batch uniformity of continuously produced chemical / material. In this post, we will show how to make quick QC XbarR plots with the ggQC package available on cran or github. cran: install.package("ggQC") Generating an Xbar or XbarR plot with ggQC is simple. To get us started, let’s simulate some production line data on candles. The candles are shaped using a mold capable of producing…