请将如下问题如何用spss进行回归分析（regression analysis）,急用！！！谢谢！

Besides many other product categories, Amazon.com offers tablet computers. A tablet is a onepiece mobile computer. Devices typically have a touch screen, with finger or stylus gestures
replacing the conventional computer mouse. It is often supplemented by physical buttons or input from sensors such as accelerometers.
You have just started as a market researcher at LENOVO and your first assignment is to get a
better understanding of the tablet market by using a unique data set that comprises information about the sales ranks of 1,454 different tablet computers on Amazon.com as well as price and product information (e.g., screen size, battery life). Moreover, the datasets contains information about product reviews (average star rating, number of reviews, and standard deviation of reviews).

Use the SPSS dataset ‘tablet’ to learn something about the address the following research
questions.
(1) To get started, you think about examining whether screen size (variable ‘screen_size_large’)
and battery life (variable ‘battery_life_classes’) influences the sales rank by using an
ANOVA.
(2) Examine what product characteristics affect a tablet’s sales rank by using an OLS regression.
(3) Examine whether product reviews influence a tablet’s sales rank by using an OLS regression.
(4) Using the results from step (2) and (3), specify a regression model that explains a tablet’s
sales rank.

第一个问题需要做屏幕大小、电池寿命对平板电脑销售排名影响的方差分析；
第二、三个问题则需要做产品特性、产品评价对平板电脑销售排名影响的最小二乘法回归分析；
第四个问题则是结合前两个问题构建一个回归分析模型，实际上就是回归方程。
（调查问卷SPSS和结构方程模型统计分析专业人士 南心网提供）

同问。。。

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