You are interested in the effectiveness of two different treatments in increasing the number of socially appropriate comments. You want to compare Treatment 1 and Treatment 2. You realize that the people enrolled in Treatment 1 and Treatment 2 have the same average posttreatment scores (average = 5 socially appropriate comments per session). Based on this histogram, what can you learn about the amount of variability in how effective these two treatments are?
You are interested in the effectiveness of two different treatments in increasing the number of socially appropriate comments. You want to compare Treatment 1 and Treatment 2. You realize that the people enrolled in Treatment 1 and Treatment 2 have the same average posttreatment scores (average = 5 socially appropriate comments per session). Based on this histogram, what can you learn about the amount of variability in how effective these two treatments are?
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Transcribed Image Text:You are interested in the effectiveness of two different treatments in increasing the
number of socially appropriate comments. You want to compare Treatment 1 and
Treatment 2. You realize that the people enrolled in Treatment 1 and Treatment 2 have
the same average posttreatment scores (average = 5 socially appropriate comments
per session). Based on this histogram, what can you learn about the amount of
variability in how effective these two treatments are?
Frequency (# people)
10
9
8
O
0
P
1
2 3
4 5 6 7 8 9 10
Number of socially appropriate comments
Treatment 1
Treatment 2
O Treatment 2 is more consistently effective across individuals (that is, a smaller SD).
Treatment 1 is more consistently effective across individuals (that is, a smaller SD).
Treatment 1 is more consistently effective across individuals (that is, a larger SD).
Treatment 2 is more consistently effective across individuals (that is, a larger SD).
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