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# Height and Weight Stats (Example)

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Question 1 Assume you have noted the following prices for paperback books and the number of pages that each book contains. Develop a least-squares estimated regression line. Compute the coefficient of determination and explain its meaning. Coefficient of determination= R-squared r=nxy-(x) (y)[nx2-(x)2][[ny2-(y)2]Page(x) Price(Y) xyx2y2500 7.00 3500 250000 49.00 700 7.50 5250 490000 56.25 750 9.00 6750 562500 81.00 590 6.50 3835 348100 42.25 540 7.50 4050 291600 56.25 650 7.00 4550 422500 49.00 480 4.50 2160 230400 20.25 x=4210 y=49 xy=30095 x2=2595100 y2=354 n=7 r=7*30095-4210*4972595100-42102[7354-492)] r=0.7503 Coefficient of determination = r2Coefficient of determination= 0.56295 The coefficient of determination of 0.56295 indicates that the number of pages of a book account for 56.295% of the variation in the price of the book. Compute the correlation coefficient between the price and the number of pages. Test to see if x and y are related. Use α = 0.10. r=nxy-(x) (y)[nx2-(x)2][[ny2-(y)2]Page(x) Price(Y) of 0.0000 indicates that this model is fit. Engineering major The scatter plot and the line of fit indicate that the Annual % ROI of doing a business major is negatively related to the cost. The R squared value of 0.9515shows that 95.15% of the variation in the Annual % ROI of a business major is explained by the cost. From the hypothesis testing Cost is a significant predictor of the Annual % ROI since the p-value is less than the level of significance of 0.05. The β1 value of -0.000000215 indicates that an increase in the cost by 1 dollar will result in a decrease in the Annual % ROI of 0.000000215. The b0 of 0.1180 indicates that when the cost is zero the Annual % ROI will be 0.1180*100 which is 11.80%. Looking at the anova table the p-value of 0.0000 indicates that this model is fit. [...]

## Order Description:

Please only the Experts in Business Stats apply. If that a major for you I would appreciate your help on this assignment. I have lots of assignments to follow So as a student please consider my financial situation

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Words 550

Pages 2

Completed in 1 day

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## Client Review

Great writter completed the work before the due time even though I was in a Rush Situation.

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03.25.2017

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