l**********8
发帖数: 305 | 1 1. It is hypothesized that β0 = 0 and β1 = 2.2. Test the appropriate
joint hypothesis and tell me you conclusions. Construct two different 95%
joint confidence regions on β0 and β1 to illustrate your conclusions.
问题如上， 前面已经算出yi=64.46+0.56xi ,一共25个观察值。
the residuals provide information regarding the validity of the assumptions
of the model, that is E[εi] = 0 and Var(εi) = σ2 or the assumption of
normality on the error terms. One simple plot for this purpose is a plot of
the residuals vs. the x values. If the the assumptions are valid there
should be no discernible pattern in the plot. Create a plot of the
residuals vs. the x values and based on this plot tell me if you think the
assumptions seem valid and defend your opinion. 也不会作图，求解阿 | P*****r
发帖数: 554 | 2 likelihood ratio test
图在R里面一画不就行了
assumptions
of
【在 l**********8 的大作中提到】
: 1. It is hypothesized that β0 = 0 and β1 = 2.2. Test the appropriate
: joint hypothesis and tell me you conclusions. Construct two different 95%
: joint confidence regions on β0 and β1 to illustrate your conclusions.
: 问题如上， 前面已经算出yi=64.46+0.56xi ,一共25个观察值。
: the residuals provide information regarding the validity of the assumptions
: of the model, that is E[εi] = 0 and Var(εi) = σ2 or the assumption of
: normality on the error terms. One simple plot for this purpose is a plot of
: the residuals vs. the x values. If the the assumptions are valid there
: should be no discernible pattern in the plot. Create a plot of the
: residuals vs. the x values and based on this plot tell me if you think the
| l**********8
发帖数: 305 | 3 不好意思，俺还没有学过R， 只是刚开始学SAS, 能给段SAS CODE 吗？ 谢谢 | P*****r
发帖数: 554 | 4 proc gplot data=XX;
plot residuals*x;
run; |
|
