In Lightbridge-KS/moodleStats: Analysis of Moodle Quiz Report

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moodleStats

A high-level, ready-to-use R package for quiz & questions analysis of Moodle Grades Report

Installation

You can install the development version of moodleStats from GitHub with:

# install.packages("remotes")
remotes::install_github("Lightbridge-KS/moodleStats")

Goal

The goal of this package it to provide a high-level functions for analysis of Moodle Grades Report such as calculation of descriptive statistics for quiz & questions, and performing an item analysis.

Workflow

library(moodleStats)

Read Data

Read Moodle Grades Report from .csv file into a Data Frame.

grades_df <- readr::read_csv(moodleStats_example("grades_report.csv"))

head(grades_df)

Prepare Data

Cleaning and filtering data can be done in 1 step using prep_grades_report()

grades_df_preped <- prep_grades_report(grades_df,
                                       choose_state = "Finished", # 1. choose only "Finished" attempt
                                       choose_grade = "max", # 2. choose only the best score of each student
                                       choose_time = "first" # 3. choose the first time that student submitted
                                       ) 
head(grades_df_preped)

Quiz Metadata

Show quiz metadata such as maximum settings of quiz and questions by quiz_meta()

quiz_meta(grades_df_preped)

Quiz Summary

summary_quiz() calculates various quiz summary statistics, and combine it into 1 row data frame.

quiz_report_df <- summary_quiz(grades_df_preped)
quiz_report_df

Question Summary and Item Analysis

summary_questions() calculates various question summary statistics and item analysis into a data frame.

question_report_df <- summary_questions(grades_df_preped)

Here is summary statistics for each questions.

question_report_df %>% 
  dplyr::select(Questions:SD)

And, here is an item analysis for Moodle Grades Report.

• Difficulty_Index is for Item Difficulty Index (p), a measure of the proportion of examinees who answered the item correctly.
• Discrimination_Index is for Item Discrimination Index (r), a pairwise point-biserial correlation between the score of each questions and total score of the quiz.

question_report_df %>% 
  dplyr::select(Questions, Difficulty_Index:p.value)

Learn more

• Get started using moodleStats

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Last updated: r format(Sys.time(), '%d %B %Y')

Lightbridge-KS/moodleStats documentation built on April 7, 2022, 8:14 p.m.