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psychometric (version 2.2)

Applied Psychometric Theory

Description

Contains functions useful for correlation theory, meta-analysis (validity-generalization), reliability, item analysis, inter-rater reliability, and classical utility

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Version

Install

install.packages('psychometric')

Monthly Downloads

1,395

Version

2.2

License

GPL (>= 2)

Maintainer

Thomas Fletcher

Last Published

August 8th, 2010

Functions in psychometric (2.2)

CI.Rsq

Confidence Interval for R-squared
SE.Meas

Standard Errors of Measurement (test scores)
FunnelPlot

Funnel Plot for Meta-Analysis
item.exam

Item Analysis
ClassUtil

Classical Utility of a Test
SEz

Standard Error of Fishers z prime
Est.true

Estimation of a True Score
Qrho

Meta-Analytic Q statistic for rho
r.nil

Nil hypothesis for a correlation
varr

Sample Size weighted variance
Utility

Marginal and Total Utility of a Test
ICC.lme

Intraclass Correlation Coefficient from a Mixed-Effects Model
CIrb

Confidence Interval about Sample Weighted Mean Correlation
MetaTable

Summary function for 'Complete' Meta-Analysis
EnterMeta

Enter Meta-Analysis Data
CIr

Confidence Interval for a Correlation Coefficient
CredIntRho

Credibility Interval for Meta-Analytic Rho
alpha.CI

Confidence Interval for Coefficient Alpha
varRes

Residual Variance in Meta-Analytic Correlation
CI.Rsqlm

Confidence Interval for Rsq - from lm()
alpha

Cronbach's Coefficient Alpha
SpearmanBrown

Spearman-Brown Prophecy Formulae
varResT

True residual variance in correlations
CIz

Confidence Interval for Fisher z'
varAV

Variance Due to Attenuating Artifacts
ABHt32

Table 3.2 from Arthur et al
r2z

Fisher r to z'
pvse

Percent of variance due to sampling error
rdif.nul

Null hypothesis for difference in two correlations
FileDrawer

File Drawer N
SErbar

Standard Error for Sample Size Weighted Mean Correlation
Qrbar

Meta-Analytic Q statistic for r-bar
CAFAA

Compound Attenuation Factor for Meta-Analytic Artifact Corrections
CI.tscore

Confidence Intervals for Test Scores
ICC.CI

Confidence interval for the Intra-class Correlation
rhoCA

Meta-Analytically Derived Correlation Coefficient Corrected for Artifacts
TestScores

Fictitious Test Scores for Illustrative Purposes
artifacts

Artifact Distribtutions Used in Meta-Analysis
vare

Sampling Error Variance
psychometric-package

Applied Psychometric Theory
varRCA

Variance in Meta-Analytic Rho
CVratio

Content Validity Ratio
discrim

Item Discrimination
CVF

Compound Variance Factor for Meta-Analytic Artifact Corrections
z2r

Fisher z' to r
rbar

Sample size weighted mean correlation
CIrdif

Confidence Interval for the difference in Correlation Coefficients
HSJt35

Table 3.5 Hunter et al.
pvaaa

Percent of Variance Accounted for by Artifacts in Rho
cRRr

Correction for Range Restriction