Which type of graph is used to summarize group means?

A. bar graph
B. line graph
C. bar and line graphs
D. tabular graph


Ans: C

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A third study with 2,000 subjects found an experimental group mean of 29.26 (SD = 2.5) and a control group mean of 29.26 (SD = 1.5). What is the average effect size of the three studies?

a. 1.09 c. 1.84 b. 1.66 d. None of these are true.

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In Chall's Stage of Reading, children progress through Stage 0 - Prereading between:

A) birth and age 6 B) ages 6-7 C) ages 7-8 D) ages 9-13

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Which of the following reinforces children’s acquisition of temporal concepts?

a. the daily routine b. a game of Mother May I? c. counting objects d. grouping the children in the class by various categories, such as sex, age, or hair color

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All of the following are Campbell and Stanley threats to internal validity except:

A) selection B) regression C) partialing D) instrumentation E) extraneous events

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