# Designing and Weighting Survey Samples

## Documentation for package ‘PracTools’ version 1.7

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

## 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
CompMOS | Compute a composite measure of size for domain-based two-stage sampling
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 an estimated total from a _pps_ sample
Domainy1y2 | Domain data
dub | Sample sizes for a double sampling design
gamEst | Estimate variance model parameter gamma
gammaFit | Iteratively estimate variance model parameter gamma
GeoDistMOS | Split geographic PSUs based on a measure of size threshold
GeoDistPSU | Form PSUs based on geographic distances
GeoMinMOS | Check geographic PSUs to determine whether any are less than minimum measure of size threshold
HMT | Generate an HMT population
hospital | Hospital Data
labor | Labor force population
MDarea.popA | Maryland area population
mibrfss | Michigan Behavioral Risk Factor Surveillance Survey
nAuditAttr | Sample sizes for an attribute sample in an audit
nAuditMUS | Sample sizes for a Monetary Unit Sample in an audit
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
nContOpt | Compute the sample size required to estimate the mean of a continuous variable by optimizing the numbers of take-alls and non-take-all units selected by probability sampling
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
nEdge | Compute the total sample size for a stratified, simple random sample based on an Edgeworth approximation
nEdgeSRS | Compute the total sample size for a simple random sample based on an Edgeworth approximation
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
nPPS | Calculate the sample size for a probability proportional to size (PPS) sample
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
quad_roots | Compute the roots of a quadratic equation
SampStop | Stopping rule for surveys
smho.N874 | Survey of Mental Health Organizations Data
smho98 | Survey of Mental Health Organizations Data
strAlloc | Allocate a sample to strata
Test_Data_US | Accounting data for some US cities with latitude and longitude of the city centroids
ThirdGrade | Third grade population
TPV | TPV Data
unitVar | Compute the unit (population) variance for a variable
wtd.moments | Compute moments of a variable from either a population or sample
wtdvar | Compute weighted variance