After grading an exam, an instructor believes the test was easier than expected; this is because ______.
a. the mean was higher than she expected
b. the standard deviation was larger than she expected
c. the mean was lower than she expected
d. the distribution was bimodal
a. the mean was higher than she expected
Education
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Which standard score has a mean of 0 and a standard deviation of 1?
a. Percentile c. z-score b. T-score d. None of these are true.
Education
Of the following, what should not be added to your master calendar?
A. free time B. due dates C. assignments D. achievements
Education
3 yd3 = ___ ft3
a. 9 b. 27 c. 81 d. 729
Education
A measure indicating the location of scores in a distribution is called a measure of:
a. central tendency. b. relationship. c. symmetry. d. variability.
Education