Wald Confidence Interval

The simple Wald type interval for multinomial proportions which is symmetrical about the sample proportions. In this method no continuity corrections are made to avoid zero width intervals when the sample proportions are at extreme.

scimp_wald(inpmat, alpha)

Arguments

inpmat	the cell counts of given contingency tables corresponding to categorical data
alpha	a number in [0..1] to get the upper 100(1-alpha) percentage point of the chi square distribution

Value

tibble with original and adjusted limits of multinomial proportions together with product of length of k intervals as volume of simultaneous confidence intervals

References

Wald, A Tests of statistical hypotheses concerning several parameters when the number of observations is large, Trans. Am. Math. Soc. 54 (1943) 426-482.

Examples

y <- c(44, 55, 43, 32, 67, 78)
z <- 0.05
scimp_wald(y, z)