What Does Statistically Significant Mean?Jeff Sauro
Statistical significance does not mean practical significance. The word “significance” in everyday usage connotes consequence and noteworthiness. Just because you get a low p-value and conclude a difference is statistically significant, doesn’t mean the difference will automatically be important. It...
But hold on—before you start stocking up on Blend A, you run a statistical test and find that this difference is statistically significant at the 0.05 level. What does that really tell you? What this means is that, given the sample size, you can be fairly confident that Blend A is ...
Hypothesis testing includes asking whether a what or what is present or not, by statistically testing the what of no what? What is a scientific hypothesis? How does it differ from a prediction? How does it differ from the statistical hypothesis? Why is the mean the most widely used measure...
What does “statistically significant” mean and what does "substantively significant" mean? Here’s the best way to solve it. Solution Share ### Concepts **Statistical Significance** Statist...View the full answer Previous question Next questionNot the question you’re l...
A researcher might correctly use the phrase highly statistically significant, if the results of the study were: a. p greater than 0.999. b. p less than 0.001. c. In neither case would using this phrase be correct. What does effect size measure? a) The magnitude of the difference betwe...
What Does a P-Value of 0.001 Mean? A p-value of 0.001 indicates that if the null hypothesis tested were indeed true, then there would be a one-in-1,000 chance of observing results at least as extreme. This leads the observer to reject the null hypothesis because either a highly rare ...
What Does KPI Mean? A KPI is a key performance indicator: data that has been collected, analyzed, and summarized to help decision-making in a business. KPIs may be a single calculation or value that summarizes a period of activity, such as “450 sales in October.” By themselves, KPIs ...
Specifically between 30-49 years of age, a small increase in prevalence of diabetes was observed in subjects with trochlear calcifications, but this was not statistically significant (8.5% versus 13.0%, p=0.40). CONCLUSION Based on the largest series to date on an unrestricted population using ...
This sample data should be consistent and statistically represent the appropriate distribution of the targeted group. In other words, we are supposed to find the right person to test, which is one of the most useful methods of testing the use cases. ...