CCRR {exametrika} | R Documentation |
Conditional Correct Response Rate
Description
The conditional correct response rate (CCRR) represents the ratio of the students who passed Item C (consequent item) to those who passed Item A (antecedent item). This function is applicable only to binary response data.
Usage
CCRR(U, na = NULL, Z = NULL, w = NULL)
## Default S3 method:
CCRR(U, na = NULL, Z = NULL, w = NULL)
## S3 method for class 'binary'
CCRR(U, na = NULL, Z = NULL, w = NULL)
## S3 method for class 'nominal'
CCRR(U, na = NULL, Z = NULL, w = NULL)
Arguments
U |
Either an object of class "exametrika" or raw data. When raw data is given,
it is converted to the exametrika class with the |
na |
Values to be treated as missing values. |
Z |
Missing indicator matrix of type matrix or data.frame. Values of 1 indicate observed responses, while 0 indicates missing data. |
w |
Item weight vector specifying the relative importance of each item. |
Value
A matrix of conditional correct response rates with exametrika class. Each element (i,j) represents the probability of correctly answering item j given that item i was answered correctly.
Note
This function is implemented using a binary data compatibility wrapper and will raise an error if used with polytomous data.
Examples
# example code
# Calculate CCRR using sample dataset J5S10
CCRR(J5S10)