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Question
72 A doctor examining the effectiveness of smoking cessation programs wanted to examine the independent and joint effect of a support group and the patch. The following data are the average number of packs smoked 2 weeks after the interventions. Each group consisted of 10 people. Answer the following questions based on this table of means.Using Patch Not using patch
In support group 0 2.5
Not in support group 1.5 3.0
a) What is the grand mean?
b) Calculate the mean packs smoked at each level of support group.
c) Calculate the mean packs smokes at each level of the patch.
Answer
This answer is hidden. It contains 58 characters.
Related questions
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58 What happens to the standard deviation when a constant is added to each score? Use the following set of data, and a constant of 2 to illustrate your answer.
1 2 3 4
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d) The upper hinge
e) The lower hinge
f) H spread
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35 Which of the following is probably most useful in studies in which extreme scores sometimes occur but have no real practical significance?
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Q:
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The previous graph is symmetrical.
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43 A "variable" refers to data that is constant.