The following data represent the net profits made by a sample of 25 companies that operate in real-state sector. 56 97 78 61 79 93 84 76 58 92 89 96 42 44 85 77 53 88 62 84 62 82 75 95 89 1- Choose the best graphical presentation and justify your answer. 2- Based on your answer in (1), construct the selected graphical presentation and comment on the results. 3- Based on your answer in (2), do you think the sector performance is satisfactory? Justify your answer.

The following data represent the net profits made by a sample of 25 companies that operate in real-state sector. 56 97 78 61 79 93 84 76 58 92 89 96 42 44 85 77 53 88 62 84 62 82 75 95 89 1- Choose the best graphical presentation and justify your answer. 2- Based on your answer in (1), construct the selected graphical presentation and comment on the results. 3- Based on your answer in (2), do you think the sector performance is satisfactory? Justify your answer.

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Description: The following data represent the net profits made by a sample of 25 companies that operate in real-state sector. 56977861799384765892899642448577538862846282759589 1- Choose the best graphical presentation and justify your answer.2- Based on your ans

Linear Algebra: A Modern Introduction

4th Edition

ISBN:9781285463247

Author:David Poole

Publisher:David Poole

Chapter7: Distance And Approximation

Section7.3: Least Squares Approximation

Problem 31EQ

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The following data represent the net profits made by a sample of 25 companies that operate in real-state sector. Table (1) 56 97 78 61 79 93 84 76 58 92 89 96 42 44 85 77 53 88 62 84 62 82 75 95 89 Choose the best graphical presentation and justify your Based on your answer in (1), construct the selected graphical presentation and comment on the Based on your answer in (2), do you think the sector performance is satisfactory? Justify your answer.
The following data represent the net profits made by a sample of 25 companies that operate in real-state sector. 56 97 78 61 79 93 84 76 58 92 89 96 42 44 85 77 53 88 62 84 62 82 75 95 89 Choose the best graphical presentation and justify your Based on your answer in (1), construct the selected graphical presentation and comment on the Based on your answer in (2), do you think the sector performance is satisfactory? Justify your answer.
An auctioneer of antique Iranian rugs kept records of his weekly auctions in order to determine the relationships among price, age of carpet or rug, number of people attending the auction, and the number of times the winning bidder had previously attended his auctions. He felt that, with this information, he could plan his auctions better, serve his steady customers better, and make a higher overall profit for himself. The results shown in the accompanying table were obtained.
Question FourThe following data represent the net profits made by a sample of 25 companiesthat operate in real-state sector.56 97 78 61 7993 84 76 58 9289 96 42 44 8577 53 88 62 8462 82 75 95 891) Choose the best graphical presentation and justify your answer.2) Based on your answer in (1), construct the selected graphical presentationand comment on the results.Based on your answer in (2), do you think the sector performance is satisfactory?Justify your answer.
A random sample of 20 individuals who graduated from harvard ago were asked to report the total amount of debt they had when they graduated from college and the total value of their current investments. the data set is below: Debt Invested 23719 25664 2327 63658 23846 23405 12262 43385 18480 32649 7823 54587 10857 45145 10085 48262 14813 40983 2299 65308 18154 31977 16650 39308 16699 34346 19120 35813 10809 47704 19566 32805 8679 50647 16647 34555 17952 33647 5454 59726 A) using a regression equation for predicting current investment based on college debt. What is the expected change in current investment for each additional dollar of harvard college debt? i got -1.8668 B) What is the predicted current investment for an individual who had a college debt of $5000? i got 58,629C) What proportion of the variation in current investment is explained by college debt? round to 4 decimal places only C needs to be answered
A random sample of 20 individuals who graduated from harvard ago were asked to report the total amount of debt they had when they graduated from college and the total value of their current investments. the data set is below: Debt Invested 23719 25664 2327 63658 23846 23405 12262 43385 18480 32649 7823 54587 10857 45145 10085 48262 14813 40983 2299 65308 18154 31977 16650 39308 16699 34346 19120 35813 10809 47704 19566 32805 8679 50647 16647 34555 17952 33647 5454 59726 A) using a regression equation for predicting current investment based on college debt. What is the expected change in current investment for each additional dollar of harvard college debt? B) What is the predicted current investment for an individual who had a college debt of $5000? C) What proportion of the variation in current investment is explained by college debt?
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The data below are the temperatures on randomly chosen days during the summer and the number of employee absences at a local company on those days. Test the claim, at the α = 0.05 level of significance, that a linear relation exists between the two variables, Apply classical and p-value approaches. Show step1-step3. Input β1 as "beta1" or "β1". Do NOT input as "b1". Temperature x 72 85 91 94 100 80 90 78 99 number of absences y 3 7 10 10 8 9 4 15 15 Round critical value and test statistic to nearest hundredth. (0.125 would be entered 0.13) Round p-value to nearest ten-thousandth. (0.14275 would be entered 0.1428)