M·C, IST: d2, Monte Carlo

Simulation of several factors for control charts

Calculates factors d₂, d₃ and c₄ for the Shewhart control charts, by Monte Carlo simulation.

n

Sample size.

ns

Number of samples to simulate.

To limit run time, it must be n × 'ns' ≤ 10 million. (Or else ns will be adjusted.)

.Seed

Seed for generation of series of random numbers.
Series is unrepeatable iff it is (try this) iseed = 0.

Parameters: d₂ = <R>/σ; d₃ = σ_R/σ; c₄ = <s>/σ; "c₄₄" = σ_s/σ .

(22-Oct-2002)

References

• Grant, E. L., R. S. Leavenworth, 1996, "Statistical Quality Control", 7.^th ed., McGraw-Hill, New York, NY.