Ahead of the upcoming test, I have some comments on Homework #1. Question 1: everyone did well, it’s straight forward. Question 2: also no comment. Question 3: some people were 100% correct, but don’t forget to include the value of intrinsic costs. Many people correctly mentioned time with family/children/spouse as an opportunity cost, but didn’t […]
The Iowa Department of Education and Iowa Workforce Development have teamed together to track students from community college into the workforce. While we’ve looked at returns to degree and in-state retention rate, we wanted to see where kids were working. In short, we looked at majors and tracked them into the industry. We aggregated majors […]
James Heckman, the Nobel-prize winning economist from the University of Chicago, spoke briefly on National Public Radio. My favorite part was Michael Martin asking why an economist (and there are quite a few of us) is interested in early childhood education: MARTIN: I hope the question doesn’t bore you. But there are…many people who will […]
ESPN’s interesting article on pitch count also contained some ugly graphs. The articles thesis is on starting pitchers now regularly pitching fewer than 100 pitches. Exhibit 1: Transparency and Area Charts Area plots don’t work well when they overlap. The above chart had to use transparency, which makes it difficult to associate colors with the […]
New York Times has an article on the science behind online dating sites, like eHarmony and Chemistry.com, that base matches on intensive surveys. The article notes: Gian Gonzaga, senior research scientist at eHarmony, said that studies his company had conducted of married people who met through eHarmony and a control group who met in other […]
Andrew Gelman compares standardized and unstandardized coefficients. Gelman has previously written a paper which addresses most of the shortcomings to unstandarized coefficients (e.g., raw coefficients, the stuff you see as a default) and addresses the issues brought up in the post. Unfortunately, he didn’t address the problems I was most interested in seeing. He writes: […]
Homework #3 has been posted on the course page and below. This is due Monday, July 13th. There will also be a test on Monday.
Homework #2 has been posted on the course page and below. This is due Thursday, July 9th.