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[主观题]
With the aid of communications satellites, large newspapers, such as the Wall Street Journ
al and USA Today, can be printed and distributed nationwide in good time.
A.Y
B.N
C.NG
提问人:网友peterpotter
发布时间:2022-01-07
A.Y
B.N
C.NG
A、a perfect western economy
B、represented by America's economy
C、part of America's soft power
D、significantly crumbled by the 2008 financial crisis
(1)画出这些数据的散点图
(2)根据散点图。表明二变量之间存在什么关系
(3)求出描述投诉率是如何依赖航班按时到达正点率的估计的回归方程
(4)对估计的回归方程的斜率作出解释
(5)如果航班按时到达的正点率为80%,估计每10万名乘客投诉的次数是多少?
a.以印象数为纵轴、以广告支出为横轴画散点图。
b.你认为这两个变量之间的关系具有什么样的性质?
c.看一下你的图,你认为值得做广告吗?想想那些出现在星期天的超级碗杯赛(SuperBowlSunday)上和世界职业棒球锦标赛期间的商业广告。
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