IB MAI HL Statistics & Probability Topic 4.2 Bivariate Statistics (id: 8a3ff9c22

本题目来源于试卷: IB MAI HL Statistics & Probability Topic 4.2 Bivariate Statistics，类别为 IB数学

[填空题]
The following table shows the total revenue, y , in Australian dollars (AUD), 8 ky ik5ugq24b;s v 8;xgyv5ah3z o4 ugj7mo+qobtained daily during the first week of January 2020 , ouzj o+43q7 mgby Peppy's Pizza restaurant and the number of guests, x , served.



1. 1. Calculate the Pearson's product-moment correlation coefficient, r , for this data.   
2. Hence comment on the result.
2. Write down the equation of the regression line y on x .y =ax+b a =    b =   
3. Use the equation of the regression line to estimate the revenue of serving 70 guests. Give your answer correct to the nearest AUD.≈   

参考答案:
空格1: 0.991±2%  空格2: 10.4±2%  空格3: -14.3±2%  空格4: 713.7±2% 


本题详细解析:

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