作者secret113 (爱情以外的秘密...)
看板Grad-ProbAsk
标题[商管] [统计]台大96商学考古题
时间Fri Feb 12 00:37:01 2010
这一题题目很长...麻烦了
steve loves to study insects,according to his study
in his whole life, he conclude that whenever there is
one spider observed in his basement ,the stock price
of company A on that particular day would be $11;
whenever two spiders observed,stock price would be
$12,and so on.steve's observation can be exactly
formulated as(stock price of company A)=10+(number of
spiders observed in the basement). No exception has
been identified .which of the following is not
correct?
(A). stock price of company A and spoders observed in
the basement are positively correlated
(B).since the two variable are positively correlated,
steve can apply regression anaysis, and the regression
coefficient,B1, would also be positive
(C).the correlation coefficient between stock proce of
A and number of spiders observed in the basement can
not bemade even larger and larger
(D).it's likely that in the next morning when steve win the
lottery,the relationship between stock price of
spiders observed in the basement may not follow the
above formula
我是一直觉得答案是c
但是正确答案是b
另外我也不太懂d的描述为什麽会是对的
所以蟆烦大家了，谢谢!!
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◆ From: 59.117.0.85
1F：推 ayabf:应该是股票价格跟观察的蜘蛛数量理论上是没有相关的吧... 02/12 01:21
2F：推 SONGya168:格式请修正 02/12 01:43
3F：→ secret113:不好意思格式有误...谢谢修正! 02/12 23:24