SOSC 2500 Lecture Notes - Lecture 8: Test Statistic, Recreational Drug Use, Null Hypothesis
29 Apr 2016
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We do different calculations for one vs. the other. Independent samples: selection of cases or subjects included in one sample has no connection or influence on the selection of cases or subjects in the other sample. Related (matched) samples: samples involving cases or subjects that share cer- tain characteristics in common. Examples: seeing the same participant more than one time. Matching people in two samples on certain characteristics. Selecting students that have seen the video vs. have not. The mean and sd are calculated a little differently for related samples. So basically subtract test 2 from test 2 to test 1, add them all together, and di- number of samples. The sum of each difference squared the rest is the same vide by. There is no difference btwn the score on the drug awareness test before watch- the film on the dangers of recreational drug use and the score the drug awareness test after watching the film.
