Welcome to On Statistics

In the realm of statistical analysis, particularly when comparing multiple groups to a control, multiple comparisons can pose a significant challenge. Conducting numerous individual hypothesis tests increases the risk of Type I error, where we erroneously reject the null hypothesis (i.e., falsely concluding a difference exists) simply due to chance. To mitigate this inflated risk,…

In the realm of regression analysis, where we seek to understand the relationships between variables, multicollinearity emerges as a critical yet often perplexing obstacle. It signifies a situation where two or more independent variables, the very foundation of our predictions, exhibit a strong linear dependence on each other. This inherent correlation, while seemingly harmless at…

In the captivating realm of regression analysis, we delve into the intricate relationships between variables. While understanding the slope coefficients and their significance is crucial, another vital concept emerges: the standard error of the regression (S). This enigmatic statistic serves as a window into the uncertainty associated with the predicted values generated by our regression…