Desensitizing students to the presence of observers or observational equipment and minimizing observer expectancies are two ways to reduce __________error
A) ?random
B) ?unavoidable
C) ?systematic
D) ?mechanical
C
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Which of the following is a recommended strategy for clarifying a group's goals?
a. Do regular progress checks while the group works toward achieving goals. b. Keep goals vague and general. c. Never adjust goals for any reason. d. Commit the goals to writing, using complex, unmeasurable terms.
A major problem with assessing students using portfolios is that two teachers often assign quite different grades to the same student's portfolio
a. True b. False
Which of these sets of sample characteristics is most likely to produce a statistically significant value for the independent samples t test statistic?
a. a small mean difference and small sample variances b. a large mean difference and small sample variances c. a small mean difference and large sample variances d. a large mean difference and large sample variances
A professor teaches a class of 42 students. If only 34 students show up to take the first exam, then how would we characterize this group who took the first exam?
A. This group constitutes the population of all students in the class. B. This group is likely to be absent for the second exam. C. This group constitutes a sample of all students in the class. D. This group is not registered for the class.