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cornsilk
2006 Nov 21
1
NEWBIE: Help explaining use of lm()?
...to a form suitable for the use of lm,
and calculate the relevant tests. ...
This stumped me right from the beginning. I thought I understood that
linear models tried to correlate an independent variable (such as the
amount of a hormone administered) to a dependent variable (such as the
height of a cornstalk). Its output was a model that could state, "for
every 10% increase in the hormone, the height increased by X%."
The zelazo data are the ages at walking (in months) of four groups of
infants, two controls and two experimentals subjected to different
exercise regimens. I don't understa...