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.
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
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
All of the following are Campbell and Stanley threats to internal validity except:
A) selection B) regression C) partialing D) instrumentation E) extraneous events