# Tools for Designing and Weighting Survey Samples

## Documentation for package ‘PracTools’ version 1.2.2

- DESCRIPTION file.
- User guides, package vignettes and other documentation.

## Help Pages

BW2stagePPS | Relvariance components for 2-stage sample
BW2stagePPSe | Estimated relvariance components for 2-stage sample
BW2stageSRS | Relvariance components for 2-stage sample
BW3stagePPS | Relvariance components for 3-stage sample
BW3stagePPSe | Estimated relvariance components for 3-stage sample
clusOpt2 | Compute optimal sample sizes for a two-stage sample
clusOpt2fixedPSU | Optimal number of sample elements per PSU in a two-stage sample when the sample of PSUs is fixed
clusOpt3 | Compute optimal sample sizes for a three-stage sample
clusOpt3fixedPSU | Compute optimal number of sample secondary sampling units (SSUs) and elements per SSU for a fixed set of primary sampling units (PSUs) in a three-stage sample
CVcalc2 | Coefficient of variation of an estimated total in a 2-stage sample
CVcalc3 | Coefficient of variation of an estimated total in a 3-stage sample
deff | Design effects of various types
deffCR | Chen-Rust design effect
deffH | Henry design effect for _pps_ sampling and GREG estimation of totals
deffK | Kish design effect
deffS | Spencer design effect for _pps_ sampling
Domainy1y2 | Domain data
dub | Sample sizes for a double sampling design
gamEst | Estimate variance model parameter gamma
gammaFit | Iteratively estimate variance model parameter gamma
HMT | Generate an HMT population
hospital | Hospital Data
labor | Labor force population
MDarea.pop | Maryland area population
mibrfss | Michigan Behavioral Risk Factor Surveillance Survey
nCont | Compute a simple random sample size for an estimated mean
nContMoe | Compute a simple random sample size for an estimated mean of a continuous variable based on margin of error
nDep2sam | Simple random sample size for difference in means
nDomain | Compute a simple random sample size for an estimated mean or total for a domain
nhis | National Health Interview Survey: Demographic variables
nhis.large | National Health Interview Survey: Demographic and health variables
nhispart | National Health Interview Survey data from 2003: socioeconomic variables
nLogOdds | Calculate simple random sample size for estimating a proportion
nProp | Compute simple random sample size for estimating a proportion
nProp2sam | Simple random sample size for difference in proportions
nPropMoe | Simple random sample size for a proportion based on margin of error
NRadjClass | Class-based nonresponse adjustments
NRFUopt | Sample sizes for a nonresponse follow-up study
nWilson | Calculate a simple random sample size for estimating a proportion
pclass | Form nonresponse adjustment classes based on propensity scores
smho.N874 | Survey of Mental Health Organizations Data
smho98 | Survey of Mental Health Organizations Data
strAlloc | Allocate a sample to strata
ThirdGrade | Third grade population
wtdvar | Compute weighted variance