September 2017
Beginner to intermediate
446 pages
9h 17m
English
book
Data Analysis with IBM SPSS Statistics
by James C. Mott, Ken Stehlik-Barry, James Sugrue, Anthony Babinec
Content preview from Data Analysis with IBM SPSS Statistics
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Testing the strength of the nonlinear relationship
The test of linearity feature in the Means procedure can also be used when the mean comparisons themselves are not of interest. When examining the relationship between age and income, for example, it is generally the case that income increases with age up to a point, then levels off and eventually declines. The following figure depicts this pattern graphically using the midpoints for the income categories in the General Social Survey data (this RECODE was shown in Chapter 7, Creating New Data Elements):
RECODE RINCOM16 (1=750)(2=2000)(3=3500)(4=4500)(5=5500)(6=6500)(7=7500)(8=9000)(9=11250)(10=13750)(11=16250)(12=18750)(13=21250)(14=23750)(15=27500)(16=32500)(17=37500)(18=45000)(19=55000)(20=67500)(21=82500)(22=95500)(23=120000) ...
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