A chi-square (χ²) statistic is like the detective of the data world, comparing your model to the real-world observations and revealing how closely they match! This handy tool shines in hypothesis testing, helping researchers uncover if two variables are connected or stand alone. With its focus on categorical data, the chi-square statistic invites us to explore the intriguing stories behind the numbers—are they fitting the expected patterns, or is there something surprising lurking beneath…
