StudentAnalysis {exametrika} | R Documentation |
StudentAnalysis
Description
The StudentAnalysis function returns descriptive statistics for each individual student. Specifically, it provides the number of responses, the number of correct answers, the passage rate, the standardized score, the percentile, and the stanine.
Usage
StudentAnalysis(U, na = NULL, Z = NULL, w = NULL)
Arguments
U |
U is a data matrix of the type matrix or data.frame. |
na |
na argument specifies the numbers or characters to be treated as missing values.
|
Z |
Z is a missing indicator matrix of the type matrix or data.frame |
w |
w is item weight vector |
Value
Returns a data frame containing the following columns for each student:
ID: Student identifier
NR: Number of responses
NRS: Number-right score (total correct answers)
PR: Passage rate (proportion correct)
SS: Standardized score (z-score)
Percentile: Student's percentile rank
Stanine: Student's stanine score (1-9)
Examples
# using sample dataset
StudentAnalysis(J15S500)