est.pop.size: A function for population size estimation.

In carrollrm/survsamp: Estimation and Sample Size Determination for Elementary Survey Sampling Methods

Description

This function allows you to make estimation or sample size determinations for surveys using simple random sampling.

Usage

est.pop.size(method = "direct", n = NULL, t = NULL, s = NULL,
  mbar = NULL, a = NULL, m = NULL, A = NULL, alpha = 0.05,
  evenly.dispersed = TRUE)

Arguments

method	The method of sampling. Options include: direct, inverse, and quadrant.
n	Size of the second sample (direct and inverse sampling methods).
t	Size of the first sample (direct and inverse sampling methods).
s	The number of retagged individuals (direct and inverse sampling methods).
mbar	The estimated average number of elements per selected quadrant.
a	The area size of the selected quadrants.
m	A vector of the number of elements per selected quadrant.
A	The total area.
alpha	Significance level.
evenly.dispersed	Logical statement indicating if the elements are evenly dispersed.
n	The number of selected quadrants.

Examples

est.pop.size(method="direct",n=200,t=300,s=62)
est.pop.size(method="inverse",n=100,t=150,s=35)
est.pop.size(method="quadrant",a=16,
            m=c(rep(0,13),rep(1,8),rep(2,12),rep(3,10),rep(4,5),rep(5,2)))
#not enough information above to est. M, only lambda (density)
est.pop.size(method="quadrant",
            mbar=40,a=10,A=60*8,n=20)

carrollrm/survsamp documentation built on April 28, 2020, 4:04 a.m.