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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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Install
install.packages('psychometric')
Monthly Downloads
1,113
Version
2.2
License
GPL (>= 2)
Maintainer
Thomas Fletcher
Last Published
August 8th, 2010
Functions in psychometric (2.2)
Search functions
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