Cronbach's alpha and McDonald's omega are widely used reliability or internal consistency measures in social, behavioral and education sciences. Alpha is reported in nearly every study that involves measuring a construct through multiple test items. The package 'coefficientalpha' calculates coefficient alpha and coefficient omega with missing data and non-normal data. Robust standard errors and confidence intervals are also provided. A test is also available to test the tau-equivalent and homogeneous assumptions. Since Version 0.5, the bootstrap confidence intervals were added.

Plots the coefficients from a model object
ggplot2, plyr, useful, stringr, reshape2

'coefplot.r' 'modelInfo.r' 'utilities.r' 'coefplot-package.r'
'multiplot.r'

'coefplot.r' 'coefplot-package.r' 'multiplot.r'
'extractCoef.r' 'buildPlottingFrame.r' 'buildPlot.r'
'dodging.r' 'coefPredMatching.r'

Plots the coefficients from model objects.  This very quickly shows the user the point estimates and confidence intervals for fitted models.

plyr, reshape2, useful, stats, dplyr (>= 0.6.0), dygraphs,
tibble, magrittr, purrr
testthat (>= 2.0.0), covr, glmnet, maxLik, xgboost, knitr,
rmarkdown

Plots the coefficients from model objects. This very quickly shows the user the point estimates and confidence intervals for fitted models.
plyr, reshape2, useful, stats, dplyr (>= 0.6.0), dygraphs,
tibble, magrittr, purrr, plotly
testthat (>= 2.0.0), covr, glmnet, maxLik, xgboost,
workflows, parsnip, knitr, rmarkdown

c(person(given = c("Gavin", "L."),
family = "Simpson",
role = c("aut","cre"),
email = "ucfagls@gmail.com"),
person(given = "Francisco",
family = "Rodriguez-Sanchez",
role = "ctb"))
Simulate species occurrence and abundances (counts) along
gradients.
Gavin L. Simpson [aut, cre],
Francisco Rodriguez-Sanchez [ctb]

c(person(given = c("Gavin", "L."),
family = "Simpson",
role = c("aut","cre"),
email = "ucfagls@gmail.com"),
person(given = "Jari",
family = "Oksanen",
role = "ctb"),
person(given = "Francisco",
family = "Rodriguez-Sanchez",
role = "ctb"))
Gavin L. Simpson [aut, cre],
Jari Oksanen [ctb],
Francisco Rodriguez-Sanchez [ctb]