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Data wrangling South Sudan census data with Python Polars — tutorial cover image

Data Wrangling & Transformation: South Sudan 2008 Census

A Beginner’s Guide to Data Wrangling with Polars
Python
Polars
Data Wrangling
Demographics
Census

Master essential data wrangling techniques using South Sudan’s census data with blazingly fast Polars DataFrames. A beginner-friendly tutorial covering select(), filter(), sort(), group_by(), string methods, and more.

May 15, 2026
Alier Reng
10 min
No matching items
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Technical Guides & Insights

Browse technical guides, tutorials, and institutional insights across data science, statistics, ML, and AI. Use search and filters to find what you need.

Data filtering with Python Polars DataFrames — tutorial cover image

Data Filtering in Polars: A Modern Approach to DataFrame Operations

A Beginner’s Guide to Row Filtering with Python and Polars
Python
Polars
Data Analysis

Learn modern data filtering techniques with Polars! This beginner-friendly tutorial covers row filtering, multiple conditions, and lazy evaluation with clear explanations and hands-on exercises.

May 22, 2026
Alier Reng
13 min
Data wrangling South Sudan census data with Python Polars — tutorial cover image

Data Wrangling & Transformation: South Sudan 2008 Census

A Beginner’s Guide to Data Wrangling with Polars
Python
Polars
Data Wrangling
Demographics
Census

Master essential data wrangling techniques using South Sudan’s census data with blazingly fast Polars DataFrames. A beginner-friendly tutorial covering select(), filter(), sort(), group_by(), string methods, and more.

May 15, 2026
Alier Reng
10 min
A note from the PyStatR+ founder — article cover image

A Note from the Founder

Why PyStatR+ Exists—and Who It Is For
Founder
Vision
PyStatR+

A personal note from the founder of PyStatR+ on purpose, people, and building human-centered data science education with clarity, ethics, and empathy.

Jan 18, 2026
Alier Reng
7 min
The mentor who transformed my learning journey — personal reflection cover image

The Mentor Who Transformed My Learning Journey

Education & Mentorship

“The Mentor Who Transformed My Learning Journey” is a personal reflection by Biar D’Chol Biar on how Alier Reng’s mentorship—rooted in resilience, service, and practical teaching—turned complex topics like programming and statistics into confidence, curiosity, and real-world capability. From early encounters in Kakuma Refugee Camp to advanced studies, the piece highlights what transformative education looks like when it is patient, contextual, and human-centered.

Nov 1, 2025
Biar D’Chol Biar
4 min
Welcome to PyStatR+ — Learning Simplified, Communication Amplified cover image

Welcome to PyStatR+

Learning Simplified. Communication Amplified.
Announcement
About
PyStatR+

Welcome to PyStatR+ — building technical capacity through data science education, analytics consulting, AI communication, and Quarto publishing. Rooted in service to South Sudan, East Africa, and the diaspora.

Oct 15, 2025
Alier Reng
3 min
Unlocking your computer's true potential — student journey cover image

Unlocking Your Computer’s True Potential: A Student’s Journey with PyStatR+

Master of Public Policy Candidate
Education & Mentorship

A first-person reflection from Master of Public Policy candidate Daniel Mabior Achiek on how PyStatR+ mentorship transformed a challenging statistics requirement into a confident, practical skill set—shifting the focus from “passing a course” to thinking computationally, applying knowledge in real projects, and communicating results with clarity.

Oct 1, 2025
Daniel Mabior Achiek
4 min
A testament to resilience and achievement — tribute article cover image

A Testament to Resilience and Achievement

Professional Tribute and Congratulatory Message
Tributes & Testimonials
Community

A heartfelt tribute celebrating Alier Reng’s remarkable journey—from humble beginnings in rural homelands, through the hardships of refugee camps in Ethiopia and Kenya, to becoming a distinguished data science professional serving America’s healthcare industry. A testament to what faith, determination, and unwavering dedication can achieve.

Jan 22, 2025
Rev. Jacob Thon Guot
4 min
Demographic patterns in South Sudan explored with the R tidyverse — tutorial cover image

Demographic Patterns in South Sudan: A Tidyverse Exploration

A Beginner’s Guide to Data Analysis with R and the Tidyverse
R
Tidyverse
ggplot2
Demographics
Data Visualization

Learn data analysis step-by-step using R’s tidyverse!

Nov 20, 2024
Alier Reng
39 min
No matching items
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