In an era where data permeates every aspect of life, the ability to interpret and analyze this information has become increasingly vital. Mathematics and Statistics Lecturer Xun Xiao from the University of Otago is committed to teaching students how to navigate this data-rich environment. His course, STAT110, aims to equip learners with essential skills for understanding the complexities of statistics and its application in everyday decisions.
Understanding Data in a Noisy World
Xun Xiao emphasizes that the world is inundated with data—from daily step counts to global market trends. He believes that to truly grasp modern life, individuals must start with a fundamental understanding of data. “A news story is data. A photo is data. A video clip is data,” he explains. “If you want to make sense of modern life, you need to understand data, starting from the very basics.”
Yet, Xun warns that data is often more than just straightforward information; it can also be “information plus noise.” He points out that noise frequently obscures the underlying signal, leading people to misinterpret reality. “Studying statistics teaches you how to extract meaningful information from a noisy world,” he says. “It helps you discern when something is genuinely unusual and when it is simply chance, giving the illusion of a trend.”
The ability to filter out noise can significantly impact decision-making. Xun asserts that statistical thinking can bring clarity to various situations, enabling individuals to recognize bias, propaganda, and misleading claims. “You learn to make data-informed decisions, which can change your life,” he adds.
Statistics in Everyday Life
While often viewed as the domain of mathematicians, statistical reasoning is relevant to many everyday choices. For instance, when purchasing a house, understanding long-term trends and economic cycles is crucial. Similarly, when shopping for electronics, examining historical price patterns can lead to better financial decisions. “Black Friday or Boxing Day deals are not always the best,” Xun notes. “Collecting data from multiple former students can provide a clearer picture when choosing university papers.”
Xun was drawn to statistics because it allows him to apply mathematical thinking to practical problems. “Doing statistical research means I get to learn new things every day,” he explains. His work spans various fields, including industrial systems, transportation, veterinary science, and food science, which he finds exhilarating.
The versatility of statistics is a major reason why the STAT110 course is beneficial for students from diverse backgrounds. “It’s for anyone who wants to build confidence in working with data,” Xun states. “Students from Sciences, Health, Business, and the Humanities all take this paper. For future scientists, a foundation in data literacy is essential, as modern science cannot progress without statistical thinking.”
He encourages students to enroll in STAT110, even if they have not completed NCEA Level 3 Math. The course offers wraparound support to help students succeed, focusing on intuition and interpretation rather than advanced mathematics. “We provide step-by-step learning materials, regular tutorials, and plenty of opportunities for questions,” Xun explains.
With the main semester attracting over 400 students, Xun also highlights the benefits of Summer School, which offers a smaller class size of around 50–60 students. This setting allows for a more focused and interactive experience. He quotes Shakespeare to illustrate the gentler pace of Summer School: “Thou art more lovely and more temperate.” The atmosphere fosters both engagement and learning.
In a world awash with data, the insights provided by statistical thinking are invaluable. Xun Xiao and his STAT110 course at the University of Otago aim to empower students to navigate this complex landscape, making informed decisions that can lead to better outcomes in their personal and professional lives.
