R: Compute process standard deviation
process.sd | R Documentation |
Compute process standard deviation
Description
This function computes the process standard
deviation and is used internally by the function
precision.grubbs.ncb.od.
Usage
process.sd(x)
Arguments
x |
A matrix or numeric data.frame consisting of an n (no. of items) by N
(no. of methods) matrix of measuremnts.
|
Details
The process standard deviation is the standard deviation of the
true values uncontaminated by measurement error. See Jaech, p. 185.
Value
A scalar containing the method of moments estimate of the process standard deviation.
Author(s)
Richard A. Bilonick
References
Jaech, J. L. (1985) Statistical Analysis of Measurement Errors. New York: Wiley.
See Also
precision.grubbs.ncb.od
Examples
data(pm2.5)
process.sd(pm2.5) # estimate of the sd of the "true values using the method of moments")
Results
|