作者Sovanna (我懂了 这样也好)
看板Statistics
标题[问题] anova考古题!
时间Wed Nov 29 09:54:04 2006
题目是酱的
one is insterested in comparing the number of minutes of music
played per hour between 4 radio stations.from a sample of 5 hours
from each stations, the following sample means were offered.
X1(bar)=51.6 X2(bar)=44 X3(bar)=46 X4(bar)=48.8 SST=192.8
A.complete the ANOVA table.
B.at 阿法=0.05, is there a difference in the treatment mean?
C.construct a 95% confidance interval for difference in mean
times between station 1 and station 4? is there a difference?
以下是我的问题
我只会算给所有样本资讯的SSB跟SST 像这样只给平均数的要怎嚜算呢?
c小题我猜是用
X1(bar)-X4(bar)服从normal分配 然後建立区间
但变异数的地方未知 母体或样本变异数都没资讯 这样要怎嚜做呢?
如果不是此作法 要怎嚜解呢?
我记得anova只能用在独立常态变异数同的母体
所以这种题目我们是否也要自行假设母体情形呢 谢谢各位大大的解答~~
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