Chieh-An Chang
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Chieh-An (Andy) Chang

Data Science & Data Engineering co-op candidate building analytics pipelines, machine learning models, and AI applications from messy data to deployable systems.

Analytics system

RRegression AnalysisANOVAExcel

Analytics

Student Learning Preference Analysis

Survey-based analysis of traditional and AI-enabled study tools

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Overview

A survey research project under Professor Labadi analyzing how students use traditional resources, online platforms, and LLM tools for learning.

Problem

Students now mix traditional resources with online platforms and AI assistants. The project investigates which tools students prefer and whether demographic factors meaningfully affect outcomes.

Dataset

A Google Forms survey reduced from 100 initial responses to 60 balanced samples through stratified sampling and integrity checks.

Approach

Performed Excel-to-R data cleaning, EDA, regression analysis, ANOVA, and sampling checks to evaluate study efficiency and preference differences.

Results

Estimated LLM impact on study efficiency with p-values above 0.05, while documenting preference patterns and limitations from the sample design.

Lessons Learned

Survey work needs careful sampling, clear variable definitions, and honest limits around sample size. Good communication made the statistical findings easier to act on.

Model / Pipeline

The implementation combines R, Regression Analysis, ANOVA, Excel, Google Forms, EDA with a repeatable workflow for data preparation, evaluation, and communication.

Tech Stack

R
Regression Analysis
ANOVA
Excel
Google Forms
EDA

Related Skills

R / Statistical Modeling - Advanced

Tags

EducationGenerative AISurveyStatistical Testing