What information do you need, and what do you do, to decide on a sample size that will provide adequate statistical power?
Answer to relevant QuestionsA meta-analysis (Anderson & Bushman, 2001) reported that the average correlation between time spent playing violent video games (X) and engaging in aggressive behavior (Y) in a set of 21 well-controlled experimental studies ...Harker & Keltner (2001) examined whether emotional well being in later life could be predicted from the facial expressions of 141 women in their college yearbook photos. The predictor variable of greatest interest was the ...The data in the table below were collected in a famous social psychological field experiment. The researchers examined a common source of frustration for drivers: a car stopped at a traffic light that fails to move when the ...What is a multiple R? How is multiple R2 interpreted? What is multicollinearity in multiple regression, and why is it a problem?
Post your question