Yearly Archives: 2010

47 posts

Bookmarks for February 8th through February 12th

These are my links for February 8th through February 12th: Found Functions – Photographs with superimposed graphs and functions Corrupted Blood incident – Wikipedia, the free encyclopedia – The Corrupted Blood incident was a widely reported virtual plague outbreak and video game glitch found in the Blizzard Entertainment computer game World of Warcraft, a massively multiplayer online role-playing game in the Warcraft series. The plague began on September 13, 2005, when an area was introduced in a new update. One boss could cast a spell called Corrupted Blood, which would deal a certain amount of damage over a period of […]

Quote: Reason and the Enlightenment

The Enlightenment gave reason pride of place, not because it expected absolute certainty, but because it sought a way to live without it – Susan Neiman’s “Moral Clarity – a guide for grown-up idealists” (2009) p.218 Via Tom Stafford

Bookmarks for February 8th from 15:06 to 15:17

These are my links for February 8th from 15:06 to 15:17: Inferring From Data – This site offers information on statistical data analysis. It describes time series analysis, popular distributions, and other topics. It examines the use of computers in statistical data analysis. It also lists related books and links to related Web sites. Space (mathematics) – Wikipedia, the free encyclopedia – In mathematics, a space is a set with some added structure. Mathematical spaces often form a hierarchy, i.e., one space may inherit all the characteristics of a parent space. For instance, all inner product spaces are also normed […]

Bookmarks for February 2nd through February 8th

These are my links for February 2nd through February 8th: Dan Ariely: Bonuses boost activity, not quality – In one [experiment] we gave subjects tasks that demanded attention, memory, concentration and creativity. We asked them, for example, to assemble puzzles and to play memory games while throwing tennis balls at a target. We promised about a third of them one day’s pay if they performed well. Another third were promised two weeks’ pay. The last third could earn a full five months’ pay. (Before you ask where you can participate in our experiments, I should tell you that we ran […]

Linked-In Q&A: 2SLS Advice

More Linked-In Q&A: Can anyone give me guidance on performing a two-stage least-squares analysis using Excel, Minitab 15, or Statistica 9? I’m taking an economics course and am required to perform this analysis, but only have experience in Excel. I’m not certain that Excel can handle this, so I downloaded trial versions of Minitab 15 and Statistica 9 but don’t have much experience with either program. Any guidance or instructions would certainly help. Thanks in advance… My answer: First, I will try to summarize what two-stage least squares regression (2SLS) is, for common understanding. 2SLS is a method for regression […]

Linked-In Q&A: ARIMA Simplified

Again, I find myself drawn-in to a Linked-In question that forces me to clearly articulate my understanding: Question: Could some one explain the ARIMA forecasting model in a simplified manner? My Answer: An autoregressive integrated moving average (ARIMA) models are best understood in the context of Box–Jenkins methodology, who’s steps are as follows: Model identification and model selection. Parameter estimation. Model checking. Box–Jenkins methodology applies autoregressive moving average (ARMA) or ARIMA models to find the best fit of a time series to past values of a time series, in order to make forecasts and understand the underlying process/es. Briefly put, […]