Question: Four young children were monitored closely over several weeks to measure how much

they watched violent television programs and their amount of violent behavior toward

their playmates. (For part (f), assume that hours watching violent television is the

predictor variable.) The results were as follows:

Child's Weekly Viewing Number of Violent

Code of Violent Viewing or Agressive Acts

Number (hours) Towards Playmates

G3368 14 9
R8904 8 6
C9890 6 1
L8722 12 8

(a) Make a scatter diagram of the raw scores

(b) Describe in words the general pattern of association, if any

(c) Figure the correlation coefficient

(d) Explain the logic of what you have done, writing as if you were speaking to someone who has never had a statistics course (but who does understand the mean, standard deviation, and Z scores)

(e) Give three logically possible directions of causality, saying for each whether it

was a reasonable direction in light of the variables involved (and why)

(f) Make raw score predictions on the criterion variable for persons with scores

on the predictor variable of –2, –1, 0, +1, and +2

(g) Give the proportion of variance accounted for (R2).