1. Which of the following correlations between two measuresprovides the most accurate basis for predicting one of the measuresfrom the other?

A) -0.88
B) -0.01
C) 0.00
D) +0.05
E) +0.76

2. Which of the following would provide evidence about thevalidity of students' estimates of their own sleep durations?

A) Ask each student's parents to record their child's sleepduration over the two weeks for comparison with the student's ownestimates.
B) Ask all of the students to rate their confidence in theirsleep estimates on a scale of 1 to 7.
C) Ask all of the students to make the same kind of estimatestwo weeks later and correlate these with their initialestimates.
D) Assess whether there is a reliable difference between theestimates provided by male and by female students.
E) Assess whether there is a reliable correlation between theage of the students and the estimates they provide.