AlphaIfDel {exametrika} | R Documentation |
Alpha Coefficient if Item removed
Description
This function returns the alpha coefficient when the specified item is excluded.
Usage
AlphaIfDel(x, delItem = NULL, na = NULL, Z = NULL, w = NULL)
Arguments
x |
This should be a data matrix or a Covariance/Phi/Tetrachoric matrix. |
delItem |
Specify the item to be deleted. If NULL, calculations are performed for all cases. |
na |
This parameter identifies the numbers or characters that should be treated as missing values when 'x' is a data matrix. |
Z |
This parameter represents a missing indicator matrix. It is only needed if 'x' is a data matrix. |
w |
This parameter is an item weight vector. It is only required if 'x' is a data matrix. |
[Package exametrika version 1.1.0 Index]