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Lucrecia1004 · 2019年08月11日

问一道题:NO.PZ2019040801000076

问题如下图:

    

选项:

A.

B.

C.

D.

解释:


老师你好,请问这道题的因变量和自变量是怎么判断的?谢谢

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品职答疑小助手雍 · 2019年08月12日

同学你好,题面第一句话,为XX公司做regression on industry sales。意思XX公司是因变量,以行业sales为自变量。

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NO.PZ2019040801000076问题如下analyst gathers the following ta for a regression of the annusales for Company Brie, a maker of oil procts, on oil proinstry sales.The regression wbaseon six observations anthe correlation between company aninstry sales is 0.9126. Whiof the following is closest to the value anis the most likely interpretation of the R^2 ? The R^2 is:A.0.1672, incating ththe variability of instry sales explains about 16.72% of the variability of company sales.B.0.1672, incating ththe variability of company sales explains about 16.72% of the variability of instry sales.C.0.8328, incating ththe variability of oil instry sales explains about 83.28% of the variability of company sales.0.8328, incating ththe variability of company sales explains about 83.28% of the variability of oil instry sales.C is correct.考点LineRegression with One Regressor解析R^2 = 0.9126^2 =0.8328自变量的变动可以R^2比例的因变量的变动。因此本题选C;答案反了。怎么知道哪个是自变量哪个是因变量啊

2024-05-06 19:47 1 · 回答

NO.PZ2019040801000076问题如下analyst gathers the following ta for a regression of the annusales for Company Brie, a maker of oil procts, on oil proinstry sales.The regression wbaseon six observations anthe correlation between company aninstry sales is 0.9126. Whiof the following is closest to the value anis the most likely interpretation of the R^2 ? The R^2 is:A.0.1672, incating ththe variability of instry sales explains about 16.72% of the variability of company sales.B.0.1672, incating ththe variability of company sales explains about 16.72% of the variability of instry sales.C.0.8328, incating ththe variability of oil instry sales explains about 83.28% of the variability of company sales.0.8328, incating ththe variability of company sales explains about 83.28% of the variability of oil instry sales.C is correct.考点LineRegression with One Regressor解析R^2 = 0.9126^2 =0.8328自变量的变动可以R^2比例的因变量的变动。因此本题选C;答案反了。题目中 描述 The correlation between company sales aninstry=0.9**, 此处考察 multiple r = r^2 以及r^2 的。 multiple r 是 correlation between actuy forecast y. 感觉的题目描述有问题

2024-04-09 08:41 2 · 回答

NO.PZ2019040801000076 0.1672, incating ththe variability of company sales explains about 16.72% of the variability of instry sales. 0.8328, incating ththe variability of oil instry sales explains about 83.28% of the variability of company sales. 0.8328, incating ththe variability of company sales explains about 83.28% of the variability of oil  instry sales. C is correct. 考点LineRegression with One Regressor 解析R^2 = 0.9126^2 =0.8328 自变量的变动可以R^2比例的因变量的变动。因此本题选C;答案反了。表格里的数字有什么用处

2021-08-22 14:30 1 · 回答

0.9126是什么?怎么求出来的?

2019-11-06 23:20 1 · 回答