Here is an exercise you might like to try on a class or individual, when introducing the mean. I have found it interesting and enlightening for all parties, especially those who think they know everything. Dr Nic: Tell me what a mean is, as if explaining it to someone who doesn’t know about statistics. Student: It’s an average. Dr Nic: Correct, however you haven’t really increased my understanding with that description. Student: It is what you get when you add all the numbers together and divide by the number of numbers. Dr Nic: That is a correct description of how to calculate a mean. Still […]