cBar_LCL {ggQC}

Lower Control Limit: Count Data (c-chart)

Description

Calculates lower control limit (LCL) for count data acquired over the same-sized area of opportunity. Negative values are reported as 0.

Usage

cBar_LCL(y, na.rm = FALSE, ...)

Arguments

y

Vector of count data. Each observation having the same-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.

Value

A number; 3-sigma lower control limit (LCL). Function returns 0 for negative values.

Examples

set.seed(5555)
y <- rpois(30, 9)
cBar_LCL(y)