Professor Plum created class intervals from the test scores for his class. He made a line graph using these intervals on the X-axis and the proportion of students who answered a particular question correctly on the Y-axis. The result is
a. a discrimination index.
b. a correlation index.
c. an item characteristic curve.
d. a histogram.
c
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The ____ in Japanese society encourage masking emotions such as anger and sadness by exhibiting polite smiling or a neutral expression
a. display rules b. rules of engagement c. rules of conduct d. rules of polite society
What effect do within-subjects designs have on F ratios?
a. F ratios are more sensitive to changes in the treatments b. F ratios are less sensitive to changes in the treatments c. F ratios tend to be smaller d. There is no effect on F ratios.
Which one of the following would NOT be considered a complex item format?
a. Portfolio b. Essay question c. Simulation d. Performance assessment
Undifferentiated sounds occur at
A) birth. B) 2 months. C) 4 months. D) 5 months.