ANOVA will tell you whether there is a statistically significant difference in the population means of three or more groups of data. But which means are different? Tukey’s will tell you that ...

Most researchers don't understand statistical significance. So, marketers -- and planners and buyers -- can be forgiven for ...

Statistical significance doesn’t tell you anything about the magnitude of the difference between populations which is usually reported as “effect size” in terms of standard deviation, which is a ...

A mathematical ritual known as null hypothesis significance testing has led researchers astray since the 1950s.