ryan {dfphase1} | R Documentation |
This data set contains the data given in Table 9.2 by Ryan (2011, p. 323). The sample comprises 20 subgroups, each with 4 observations, on two quality characteristics X1 and X2. According to Ryan (2011), the 10th and 20th subgroups are out-of-control.
data(ryan)
A 2x4x20 array.
T. P. Ryan (2011), Statistical Methods for Quality Improvement, 3rd ed., Wiley.
data(ryan) mphase1Plot(ryan)