Find an internet site that enables you to automatically perform the two sample independent t test. You might begin by plugging in phrases such as the following in Google and see what pops up: (1) “automatically calculate the two sample independent t test;” or (2) “two sample independent t test calculator.” [Two site hints: http://www.usablestats.com/calcs/2samplet ; and http://www.statisticslectures.com/calculators/ttest2/]. Using the following two independent samples of scores of five scores each, from Group One the scores are: 4, 5, 4, 4, and 3. From Group Two the five scores are 0, 0, 2, 1, and 2. Using a two-tailed test and alpha equal to .05, calculate the independent t statistic. Assume equal variances. You will find that calculated t is about 5.48. Now what I’d like you to put on the group participation board is the URL (website address) and a review of this computer program in terms of user friendliness and how easy it is to absorb the instructions and do it yourself to come up with the right answers. Rate it in terms of one to five stars, with five stars being “great.” Comment about the ease of using this site, and its accuracy (of course). Also comment on any glitches other students might run into in trying to find the calculated value of t. That is, make it easier for other students who may go to this site.
