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★ ★ ★ ★ ★

Explains things clearly and patiently

I would like to express my sincere appreciation to Dr. Alvin for being such a wonderful and dedicated teacher. He explains things clearly and patiently, making even difficult topics much easier to understand. Highly recommended!
MI
Muhammad Iszan WSQ - Data Analytics and Visualization with Python
★ ★ ★ ★ ★

Well-structured, engaging and easy to follow

I had the pleasure of learning R Data Analytics and Visualization under Dr Alvin Ang at Tertiary Infotech. His lessons were well-structured, engaging, and easy to follow, allowing even complex R programming concepts to be understood with confidence. Through a combination of clear explanations, practical examples, and hands-on exercises, he created an enjoyable and highly effective learning experience. Throughout the course, Dr Alvin covered a comprehensive range of topics including data wrangling with the tidyverse, data visualization using ggplot2, data manipulation with dplyr, tidyr and readr, piping with %>%, text mining using wordcloud, and statistical analysis techniques that are highly relevant to real-world data analytics. He was always patient, approachable, and willing to answer questions, ensuring that every participant understood the concepts before moving forward. Beyond the classroom, Dr Alvin generously shared additional learning resources, industry insights, and practical career advice to support our continued learning journey. I would highly recommend Dr Alvin Ang to anyone looking to build a strong foundation in R programming, data analytics, and data visualization. His passion for teaching and depth of knowledge make him an outstanding trainer and mentor.
WW
Wanxin Wang CASL - Data Analytics and Visualization with R
★ ★ ★ ★ ★

A luminary in the field of data science

Few can claim to know such a luminary in the field of data science as Dr Alvin Ang. Our correspondence has led me to realize the sheer breadth and depth of the field of data science. Only a true expert like Dr Ang could have revealed to me through his advocacy, teaching, publications, and real world experience how diverse the field truly is. From the very start I was star-struck, first by his academic achievements — a doctorate in Operations Research, a master's in Logistics and a bachelor's in Engineering, all from the world renowned Nanyang Technological University — and then by his experience in industry as well as in academia as a lecturer, trainer, consultant and analyst. He continues to impress and inspire me with his achievements. I highly recommend Dr Ang as the most reputable data scientist that I have been fortunate to know.
AL
Anthony John Louis CASL - Data Analytics and Visualization with R
★ ★ ★ ★ ★

Clear, Practical, and Very Useful for My Work

Dr Alvin Ang, I enjoy the statistics, because it gives me ideals how to do the work. This is my second course with Tertiary Courses Singapore. Dr. Alvin Ang's Excel Power Query and Power Pivot class was clear, practical, and very useful for my work.
JP
Jahn pp CASL - Excel Power Query and Power Pivot