est_portion: Estimate the portion of a total.

In ryankinzer/cuyem: Snake River Basin Anadromous Fish Summaries and Metric Estimation

Estimate the portion of a total.

Description

Portion a total number \(i.e. escapement or abundance\) into its parts using estimated proportions. est_portion will return the estimated portion and the associated precision of each estimate. Currently the portions are calculated assuming independence of the proportions. In the future this function should be calcuated using a multinomial distribtion.

Usage

est_portion(N, SE_N, phat, SE_phat, alpha = 0.05)

Arguments

N	total escapement or abundance
SE_N	standard error of N
phat	vector of probabilities
SE_phat	vector of standard errors for probabilities
alpha	type I error rate. Default is set at 0.05 to produce 95 confidence intervals.

Author(s)

Ryan N. Kinzer

Examples

Nhat = 1000
SE_N = 50
phat = c(.2,.5,.3)
SE_phat = c(.01,.03,.01)
est_portion(N, SE_N, phat, SE_phat)

ryankinzer/cuyem documentation built on April 20, 2024, 2:10 p.m.