One advantage of T-scores over z-scores is that they
A. always have the same standard deviation.
B. are more easily converted to percentile ranks.
C. can be added and subtracted.
D. include only positive scores.
D
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Standard 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.
Regarding homeschooling in the United States, which of the following statements are TRUE?
a. Compared to students from a traditional academic background, students who have been homeschooled more than seven years are more likely to be active, involved community members and are more likely to vote as adults. b. Homeschooling is a fast-growing trend, with the number of homeschoolers expected to double from 1999 to 2010. c. The majority of homeschooling families are white, middle-class or upper-class, and well educated. d. Many homeschooled children have better self-concepts than conventionally schooled children. e. All of these answers.
A new first grade teacher uses a pretest to assign her students to reading groups. She then plans her lessons and activities for the next three months. This teacher:
a. Should not rely on one small assessment to determine long-term group placement. b. Should use flexible grouping and use several informal and formal assessments when determining groups. c. Has planned ahead and will be able to give her students the best instruction for their level of achievement. d. A and B
Which of the following statements best describes moderation?
A. The combined effect of two variables on another B. The effect of a moderator variable on a predictor variable C. The effect of an outcome variable on a moderator variable D. The effect of a single variable on that of two others