Statistical studies

Statistical and non statistical questions

Here's the thing to ask when determining if you have a statistical and non-statistical question on your hand: Is there variability involved? Watch and we'll explain.

Inferring population mean from sample mean

Much of statistics is based upon using data from a random sample that is representative of the population at large. From that sample mean, we can infer things about the greater population mean. We'll explain.

Reasonable samples

To make a valid conclusion you'll need a representaive, not skewed, sample

Correlation and causality

Understanding why correlation does not imply causality (even though many in the press and some researchers often imply otherwise)