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[问答] SAS A00-240 Q58 求解惑 [推广有奖]

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cheche1218 发表于 2014-8-18 01:56:50 |显示全部楼层 |坛友微信交流群
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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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关键词:regression predicting correctly customers summarize customers purchase selected whether

cheche1218 发表于 2014-8-18 02:04:25 |显示全部楼层 |坛友微信交流群
噢~我已經自己突然間明白了!!!!不需要解釋了!謝謝!

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shiwenwei 在职认证  发表于 2014-8-18 04:39:48 |显示全部楼层 |坛友微信交流群
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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saltlake123 发表于 2014-8-18 06:30:59 |显示全部楼层 |坛友微信交流群
路过看看~~~~~~~~~~

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sanzpatel 发表于 2014-9-15 21:26:00 |显示全部楼层 |坛友微信交流群
pLEASE CPY ME SANZPATEL@GMAIL.COM

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