February 28, 2017

Homework Help: STATISTICS

Posted by DEBBIE on Saturday, February 5, 2011 at 9:03pm.

A statistics professor conducted a study on the effect of playing video games on a student’s test scores. On the first day of class, she randomly divided her classes into groups. Group one played video games 2 hours a day, group two played video games 4 hours a day, and group three did not play video games at all. After three weeks the students took their first test. The professor then compared the test scores of the three groups to see if the game playing made a difference in the students’ performance on the test.

Identify at least one potential bias in the sampling technique.

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