For the lung function data set, create a new variable called AGEDIFF = (age of child 1)

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For the lung function data set, create a new variable called AGEDIFF = (age of child 1) – (age of child 2) for families with at least two children. Produce a frequency count of this variable.

Are there any negative values? Comment.

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Practical Multivariate Analysis

ISBN: 9781032088471

6th Edition

Authors: Abdelmonem Afifi, Susanne May, Virginia A. Clark, Robin Donatello

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