Saturday, January 19, 2013


Here's a site that I use quite a lot: Zamzar.

Zamzar allows you to upload a file in one format, and they convert it for free to a new format of your choice. You don't have to download and install any software on you own machine. All you need is the original file and an email address.

This morning, for example, I used Zamzar to convert a .emf file to a .gif file. Quick and easy!

© 2013, David E. Giles

Sums of Random Variables

I'm currently teaching first-level course in statistical inference for  (mostly) economics students. They've taken a one-semester course in descriptive (economic) statistics, and now we're dealing with sampling distributions, estimation, hypothesis testing, and simple regression analysis.