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.
Ques. 2A student with a z-score of 2.5
a. got three-fourths of the answers correct.
b. scored at the 75 percentile.
c. scored in the highest 1 percent of the cases.
d. None of these are true.
Ques. 3Which of the following is an above-average score?
a. 100 c. T = 49
b. z = +1.5 d. z = -2.99
Ques. 4A T-score of 40 is higher than about what percent of the scores in a distribution?
a. 16 percent c. 68 percent
b. 50 percent d. 84 percent
Ques. 5A 100-point math test has a mean of 40 and a standard deviation of 15 . A 60-point English test has a mean of 40 and a standard deviation of 5 . Pat scored a 50 on both tests.
a. Pat scored better on the English test. c. Pat scored about the same on both tests.
b. Pat scored better on the math test. d. None of these are true.
Ques. 6You would find curves rather than right angles in a
a. Polygon. c. frequency distribution.
b. Histogram. d. Scatterplot.
Ques. 7If your test score was one standard deviation above the mean score, your best estimate is that you scored better than what percent of the test takers?
a. 50 c. 84
b. 68 d. 98
Ques. 8Standard procedure in organizing a frequency distribution is to
a. list scores from the lowest at bottom to highest at top.
b. list scores from the lowest at top to highest at bottom.
c. include score values that are higher than the lowest and lower than the highest that have zero frequency.
d. a and c.
e. b and c.
Ques. 9The measure of central tendency that indicates the point below which half the scores fall is the:
a. standard deviation.
b. mean.
c. median.
d. mode.
e. Spearman rho.
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