Of the following research topics, which is most likely to be an observational study?
a. The relationship between hours of exercise and sleep.
b. The difference in minutes a day exercising between boys and girls.
c. The types of exercise students engage in after school.
d. Students' feelings about after-school track practice.
c
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When testing the statistical significance of a correlation coefficient, the null hypothesis states
a. p = 0, the population correlation is zero. b. p = +1.00 or -1.00, the population correlation is +1.00 or -1.00. c. r = 0, the sample correlation is zero. d. r = +1.00 or -1.00 the sample correlation is +1.00 or -1.00.
The frequency of responses from most-used to least-used is in this order: evaluative, interpretative, supportive, probing, understanding
Indicate whether the statement is true or false
You are looking at the information an item analysis provides about a quiz you gave this morning. Most of the test items have D values of between .20 and .50 . However, question #12 has a D value of -.60 . You should conclude that the item:
a. is measuring rote memorization rather than meaningful learning. b. was more difficult for students than the other items were. c. was easier for students than the other items were. d. was poorly written or incorrectly scored.
Resistance theory may be helpful in explaining
A. a tendency among girls to perform below their skill levels in school. B. a tendency among African-American students to reject school norms. C. a tendency among working class white students to reject school norms. D. All these answers are correct.