Announcements

Hi all, I've posted Assignment 3. Sorry for the delay on this. As mentioned in class, it is due Wednesday, March 6, by 9 am. I've made some of these problems somewhat instructional, with code provided in some cases. My hope is that you spend some time to try to understand the provided code.

I also posted (last night) solutions to Assignment 2 and Lab 6. I made a slight correction to the solutions to Assignment 2 this morning (thanks Hyelee for bringing some minor errors to my attention).

Finally, I mentioned in class yesterday that many built-in R functions have argument defaults, but did not provide examples. Some examples are as follows:

• log(): the default argument to base is the natural number e. In other words, by default, log() takes the natural log
• confint(): the default argument to level is 0.95. In other words, by default, confint() provides 95% confidence intervals
• t.test(): the default argument to var.equal is FALSE. In other words, by default, t.test() does not assume equal variance