Can be either a data matrix or a covariance
matrix
item.stats.max
items statistics shown if the
number of items are less than this value.
missing
how to handle missing values.
Value
lambda3
The unstandardized and standardized
lambda3 estimate.
item.stats
If the input data
was a covariance matrix then this is a table of
reliability estimates if an item was dropped. If the
input data is a data frame then the mean, standard
deviation, and number of observations are also included.
items
The number of items.
item.stats.max
The maximum number of item to
display the item.stats table (user specified).
References
Cronbach L (1951). "Coefficient Alpha and the Internal
Structure of Tests." Psychometrika, 16, 297-334. Guttman
L (1945). "A Basis for Analyzing Test-Retest
Reliability." Psychometrika, 10, 255-282.