A researcher is interested in the possible effect of teacher–student ratios on students' learning. She finds 10 fifth-grade classrooms with 30–40 students per class and 10 others with 15–25 students per class. She discovers that there is a correlation between class size and student achievement. Which one of the following conclusions can we draw from this study?
a. Class size can help us predict school achievement.
b. Classes should be as large as is reasonably possible.
c. Classes should be as small as is reasonably possible.
d. The researcher has conducted a descriptive study.
a
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Tammy comes to school on a snowy December day without a coat and wearing sandals without socks. This is not the first time she has been inappropriately dressed for the weather. Your concern is that Tammy is a victim of
a. b. c. d.
If a computed Pearson’s correlation coefficient is statistically significant at the .01 level,
a. an important relationship between the variables is assured. b. the two variables have a negligible relationship. c. it is highly likely that a relationship exists between the variables in the population. d. the correlation between the variables is positive.
To identify the construct validity of a measure, we must ______.
A. choose an appropriate research design for a study B. identify an appropriate statistical analysis needed to evaluate outcomes C. establish an appropriate operational definition for the construct being measured D. construct an appropriate research plan to test a theory or hypothesis
Answer the following statement(s) true (T) or false (F)
Participative leadership is effective with subordinates who have a an internal locus of control.