13. Four young children were monitored closely over a period of several weeks to measure how much they watched violent television programs and their amount of violent behavior toward their playmates. The results were as follows:
Weekly Viewing of Number of Violent or AggressiveChild’s Code Number Violent TV (hours) Acts Toward PlaymatesG3368 14 9R8904 8 6C9890 6 1L8722 12 8
(a) Make a scatter diagram of the scores; (b) describe in words the general pattern of correlation, if any; (c) figurethe correlation coefficient; (d) figure whether the correlation is statistically significant (use the .05 significance level, two-tailed); (e) explain the logic of what you have done, writing as if you are speaking to someone who has never heardof correlation (but who does understand the mean, deviation scores, and hypothesis testing); and (f) give three logically possible directions of causality, indicating for each direction whether it is a reasonable explanation for the correlationin light of the variables involved (and why).
