Peter H.M. Klaren

2 Questions 13 Answers 0 Followers

Questions related from Peter H.M. Klaren

What is required in parametric statistics: a normal distribution of the samples' means only, or of the original data as well?

Many statistical textbooks state that parametric significance tests require a normal distribution of the samples' data points. Norman and Streiner write: "It seems that most people who have taken...

20 February 2015 4,085 11 View

Is there any (published) evidence of tool use by European magpies (Pica pica)?

A six-year old asks me, and I only know of Caledonian crows making and using tools.

11 May 2014 8,508 2 View