The appropriate statistic used to find the relationship between teachers' rankings of students' leadership ability and their rankings of students' communication skills is
a. Pearson's r. c. correlation ratio.
b. Spearman's rho. d. biserial correlation.
Question 2
The most useful technique to minimize the effects of experimenter bias on the outcome of an experiment is to
a. conduct a double-blind experiment.
b. discuss thoroughly the expected findings with those in charge of data collection.
c. use a variety of more subjective measuring instruments.
d. let the experimenter in charge of data collection have more leeway in choosing procedures for administering the treatments.
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