#### Tricky Probability Problem: Chance of Two Sons, One Born on Tuesday?

Thanks to reader Matt Lewis who sent me this link. Martin Gardner, may he rest in peace, gave us a delicious probability problem: Suppose that Mrs Smith has two children,…

#### Statistics as Beauty; Global Warming Miscellany; SATs Biased?; More

Statistics is Beautiful? From reader Yeah, Yeah comes a link to a Wired article which assures us we should "Learn the Language of Data." It's not a pretty language, but…

#### What Do You Really Want: Part II

Class is, thank God, rapidly coming to an end. I am sure we are all grateful. Here's an addendum to yesterday; but only briefly explained. Because of the crush of…

#### Lesson n+1: Measurement & Observables

Just a very crude sketch today: it is not complete by any stretch. Naturally, the students in the summer class don't receive this level of information. Best we can tell,…

#### Lesson Somethingorother: Against the P-value

I've lost count of the lesson numbers. The definition of a p-value, here phrased in the incorrectly named "test of difference in means", is: Given the truth of a probability…

#### Lesson Five or Six: Abnormality

Say! What happened to lessons three through four or five? Who knows. This morning, I'm dreadfully rushed, so just a sketch. I do not expect anybody to be convinced this…

#### Lesson Two Again and Again: Logic is Not Opinion

Everybody: thanks for the emails. I do see them. I'll be answering all on the weekend. Would it surprise you to learn that to graduate with a degree in statistics---BS,…

#### Lesson Two Redux: More Mysticism

Is it written into sport announcers' contract that they shall speak in nothing but cliché? Since there is always great confusion about why premises about "fairness" or "randomness" are not…