Excerpt: A pharmaceutical company tested three formulations of a pain relief medicine for migraine headache sufferers. For the experiment, 27 volunteers were selected and 9 were randomly assigned to one of three drug formulations. The subjects were instructed to take the drug during their next migraine headache episode and to report their pain on a scale […]
Excerpt: A study compared the effectiveness of several antidepressants by examining the experiments in which they had passed the FDA requirements. Each of those experiments compared the active drug with a placebo, an inert pill given to some of the subjects. In each experiment some patients treated with the placebo had improved, a phenomenon called the […]
Excerpt: In Olympic Archery both men and women start with a field of 64 qualifiers. Each archer shoots a round of 72 arrows (total possible score: 720) to establish a seeding position. Then they participate in a single-elimination contest. Thus, the seeding round is the only one that provides data for all archers (because some are […]
Methods: Multiple Regression, Correlation, Regression, Test for Difference between Two Groups, Comparing Two Groups, Scatterplot
Source: Attendance from http://www.espn.com/mlb/attendance Won and Lost totals from http://www.baseball-reference.com/leagues/MLB/2016.shtml
Number of Cases: 30
Excerpt: American League baseball games are played under the designated hitter rule, meaning that pitchers, often weak hitters, do not come to bat. Baseball owners believe that the designated hitter rule means more runs scored, which in turn means higher attendance. Is there evidence that more fans attend games if the teams score more runs? The […]
Excerpt: In a statement to a Senate Public Works Committee, a senior executive of Texaco, Inc., cited a study on the effectiveness of auto filters on reducing noise. Because of concerns about performance, two types of filters were studied, a standard silencer and a new device developed by the Associated Octel Company. Noise is in decibels/10. […]
Excerpt: It has been suggested that children born in the summer have an advantage over their peers when it comes to sports, perhaps because they can be outdoors when they are young. The data report the number of professional ballplayers born in each month of the year for one season of professional baseball.
Source: Results of a barbershop competition as reported by Velleman
Number of Cases: 34
Excerpt: At a barbershop music singing competition, choruses are judged on three scales: Music (quality of the arrangement, etc.), Performance, and Singing. The scales are supposed to be independent of each other, and each is scored by a different judge, but a friend claims that he can predict a chorus’s singing score from the other two […]
How To Use
The Open in Data Desk function is integrated into the latest releases of Data Description's data exploration suite, Data Desk, available for Windows 10 and Mac OS X. To learn more, please visit Data Description.