Another semester of Data Management is off to a great start! Today we learned a few “gentle” concepts and terms:
Tree diagrams – representing stages in a series of choices by branching for each option available. We used these to model all of the options for arranging letters, selecting unfashionable outfits, etc.
Factorials – the product of consecutive whole numbers, starting at 1. The formal definition I gave you was something like this:
That is, for a whole number , we calculate the factorial of by taking the product of all the natural numbers up to and including .
For example, .
We didn’t talk about it today, but we also need to define . If you read this blog post, you’ll be able to casually mention that tomorrow as though it’s completely obvious. :)
I also handed out a course outline and a contact information/learning profile sheet for you to complete and return for me. Here are copies, just in case you need them: