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2014-08-18
實在不明白這題,懇求解釋!

QUESTION NO: 58

SAS Institute A00-240 Exam


Refer to the exhibit:

Screen Shot 2014-08-17 at 下午1.55.24.png


An analyst examined logistic regression models for predicting whether a customer would make a

purchase. The ROC curve displayed summarizes the models. Using the selected model and the

analyst's decision rule, 25% of the customers who did not make a purchase are incorrectly

classified as purchasers.

What can be concluded from the graph?

A. About 25% of the customers who did make a purchase are correctly classified as making a

purchase.

B. About 50% of the customers who did make a purchase are correctly classified as making a

purchase.

C. About 85% of the customers who did make a purchase are correctly classified as making a

purchase.

D. About 95% of the customers who did make a purchase are correctly classified as making a

purchase.

Answer: C



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2014-8-18 02:04:25
噢~我已經自己突然間明白了!!!!不需要解釋了!謝謝!
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2014-8-18 04:39:48
我回帖赚经验,没有论坛币了,文章你们要是进了简报,我就看啊。
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2014-8-18 06:30:59
路过看看~~~~~~~~~~
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2014-9-15 21:26:00
pLEASE CPY ME SANZPATEL@GMAIL.COM
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