by Patrick Burns.
Abstract: We report on a study of the ability of analysts to distinguish an actual price series of an equity from random alternatives. Virtually all of the statistical tests on the results support the hypothesis that no skill was exhibited in selecting the correct response. Many of the analysts were extremely over-confident about their ability to select correct answers. The one area where it seems skill might have been exhibited is in the selection of correct answers that happened to be far from the random choices.
jun 25, 26
Towards the basic R mindset. Previously The post ”A first step towards R from spreadsheets” provides an introduction to switching from spreadsheets to R. It also includes a list of [...]
jun 25, 26
I failed to find Kahneman’s book in the economics section of the bookshop, so I had to ask where it was. ”Oh, that’s in the psychology section.” It should have [...]
jun 25, 26
An introductory comparison of using the two languages. Background R was made especially for data analysis and graphics. SQL was made especially for databases. They are allies. The data structure [...]