psum: Probability Outcomes for a Multinomial Trial

In austinragotzy/mathstat: Introduction to Mathematical Statistics R Package

Description

psum is an auxiliary function used in the function multitrial which generates a random trial from a multinormal distribution. If there are k categories for a multinomial with respective probabilities in the k by 1 vector ps then psum(ps) returns the accumulating probabilities p_1, p_1+p_2, ..., 1.

Usage

psum(ps)

Arguments

ps	k by 1 vector containing probabilities for k possible outcomes

Details

An illustration of this function's use can be found in Exercise 3.1.19 on page 165.

Value

psum contains k parameters of a multinomial distribution

References

Hogg, R., McKean, J., Craig, A. (2018) Introduction to Mathematical Statistics, 8th Ed. Boston: Pearson.

See Also

multitrial() for more on computing multinomial trials

Examples

ps <- c(0.1, 0.1, 0.2, 0.3, 0.2, 0.1)
psum(ps)

ps <- c(0.2, 0.2, 0.2, 0.2, 0.2)
psum(ps)

austinragotzy/mathstat documentation built on May 13, 2019, 11:30 a.m.