ryan

<p>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 \(X_1\) and
  \(X_2\). According to Ryan (2011), the 10th and 20th subgroups are out-of-control.</p>

datasets

Statistical methods for retrospectively detecting changes
in location and/or dispersion of univariate and multivariate
variables. Data values are assumed to be independent, can be
individual (one observation at each instant of time) or subgrouped
(more than one observation at each instant of time).
Control limits are computed, often using a permutation approach,
so that a prescribed false alarm probability is guaranteed
without making any parametric assumptions on the stable
(in-control) distribution. See G. Capizzi and G. Masarotto (2018)
<doi:10.1007/978-3-319-75295-2_1> for an introduction to the package.

ryan: Ryan data

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