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CoinMinD (version 1.2.1)

WALD: WALD: Wald Method for Simultaneous Confidence Intervals

Description

Computes simple Wald-type simultaneous confidence intervals for multinomial proportions. These intervals are symmetric about the sample proportions and do not use continuity corrections, thus avoiding zero-width intervals even for extreme sample proportions.

Usage

WALD(inpmat, alpha)

Value

Prints the original and adjusted confidence intervals for each category, along with the volume (product of interval widths).

Arguments

inpmat

Integer vector of observed cell counts corresponding to a categorical dataset. All values must be non-negative.

alpha

Desired statistical significance level

Author

Dr. M. Subbiah

Details

The adjusted limits are truncated to stay within the [0,1] range.

References

Wald, A. (1943). *Tests of Statistical Hypotheses Concerning Several Parameters When the Number of Observations is Large.* Transactions of the American Mathematical Society, **54**, 426–482.

See Also

BMDE, WALDCC, SG

Examples

Run this code
y <- c(44, 55, 43, 32, 67, 78)
z <- 0.05
WALD(y, z)

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