Research and statistical analysis help us understand how the world works, how effective medications and treatments are, what influences our health, the best approach for business practices, and much ...

Hypothesis testing is a formal procedure for investigating our ideas about the world using statistics. It is most often used by researchers to test predictions, called hypotheses. The first step in ...

Steve Bunk's 5-PRIME on the null hypothesis was a good, brief piece. 1 However, he made the common error of confusing the null hypothesis (the hypothesis against ...

What? Perhaps primary among the challenges and conditions that face life scientists is the infinite variability between individuals. An important tool for measuring those disparities is the Null ...

It may be common knowledge that p < .05 indicates statistical significance. Psychology students (and others) are often taught that p < .05 means the probability (p) of rejecting the null hypothesis ...

Should you believe the findings of scientific studies? Amid current concerns about the public's trust in science, old arguments are resurfacing that can sow confusion. As a statistician involved in ...