Ht of a male white
chapter 3 examinility
a time since
weight (in grams) and time
the linear regression
exercises
1.29 that's one big ratl some data were collected on the wei
laboratory ral following its birth. a scatterplot of the weight in
birth in weeks) shows a fairly strong positive linear relationship. the
cquation
weight = 100 + 40 time)
models the data fairly well
(a) interpret the slope of the regression line in this setting.
(b) interpret the y intercept of the regression line in this setting.
(c) draw a graph of this line between birth and 10 weeks of age.
di would not be willing to use this line to predict the rat s weight at age 2 var
the prediction and think about the reasonableness of the result. (there ar
a pound. to you assess the result, note that a medium-sized cat
pounds.)
the rat's weight at age 2 years? do
result. (there are 454 grams in
olt note that a medium-sized cat weighs about 10