Charge weight of insecticide dispensers
Firstly drag the slider to the right to show the successive charge weights of dispensers that were sampled from the process output over a period of two days. The mean (463.66) and SD (16.94) from this training set provide control limits for further data.
Select Later data and again drag the slider to see the weights of the next 99 dispensers that were sampled in the following two days.
The data arise from an industrial process manufacturing insecticide dispensers. Among other measurements relating to the quality of the dispensers, it is important to keep the charge weight of the dispensers within fairly tight limits.