bcc (version 1.3.1)

sd.beta: sd.beta

Description

These functions are used to compute statistics required by the beta chart.

Usage

sd.beta(data, sizes, ...)

Arguments

data

the observed data values.

sizes

sample sizes

...

further arguments are ignored.

Value

The function sd.beta returns std.dev the standard deviation of the statistic charted.

Details

Performs the calculation of the standard deviation std.dev that will be used in the construction of the control chart.

Examples

# NOT RUN {
data(Montgomery2005)
sd.beta(Montgomery2005$Defective, Montgomery2005$Sample)
# }