Placement of Data Manipulation and Data Subsetting Statements

The use of data manipulation and data subsetting statements are illustrated here with reference to the fictitious study described in the preceding chapter. In that chapter, you were asked to imagine that you had developed a 7-item questionnaire dealing with volunteerism, as shown in the following example.

Volunteerism Survey

Please indicate the extent to which you agree or
 disagree with each
of the following statements.  You will do this by
 circling the appropriate number to the left ...

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