StudentAnalysis: StudentAnalysis

In exametrika: Test Theory Analysis and Biclustering

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. 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)
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)

exametrika documentation built on Aug. 21, 2025, 5:27 p.m.