Upper Control Limit: Count Data (u-chart)
Calculates point-wise upper control limit (UCL) for count data acquired over a variable area of opportunity.
uBar_UCL(y, n, na.rm = FALSE, ...)
y |
Vector of counts per unit opportunity (rate). Observations may have a different area of opportunity, n. |
n |
A vector representing the area of opportunity. |
na.rm |
a logical value indicating whether NA values should be stripped before the computation proceeds. |
... |
further arguments passed to or from other methods. |
A vector; point-wise 3-sigma upper control limit (UCL)
set.seed(5555) counts <- rpois(100, 25) n <- rpois(100, 15) uBar_UCL(y = counts / n, n = n)
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