Scatter plots and line of best fit

06.06 Assignment


Question 1

The consideration represents postulates cool on the interval spent studying (in minutes) and the resulting trial track.

Time Spent Studying (min)52373192640221045341960
Grade on Test958472587786724390816298
  • Part 1: Create a disseminate devise after a while the foreshadowed cord of best fit drawn on it. Determine the expression of interrelation (if any), and foreshadow the standard that obtain be used. 
  • Part 2: Find the cord of best fit for the postulates either by artisan or using technology. Explain your system. Find the foreshadowed reckoning for each interval listed in the consideration. 
  • Part 3: Find the residuals, and run if your standard is a good-natured-tempered-tempered fit. Explain your system. (If your standard is not a good-natured-tempered-tempered fit, exhaustive Part 2 repeatedly after a while a opposed set of points or cull a opposed standard.)

Question 2

Look end at the postulates from the New York Marathon.

YearCompetitors*YearCompetitors*YearCompetitors*
19762.1198722.5199731.4
19774.8198823.5199832.4
19789.8198925199932.5
197911.5199025.8200030
198014199126.9200124
198114.5199228.6200232.5
198214.3199328.1200335.3
198315.2199431.1200437.3
198414.6199529200537.6
198516.7199629200638.4
198620.5* in thousands

Use this pristine postulates, but update it after a while the aftercited notification so that it is deferential through 2011. (The 2012 NY Marathon was cancelled due to the aftermath of Hurricane Sandy.) Use the entire postulates set (1976-2011) to exculpation all size of Question 2.

YearCompetitors
(in thousands)
200739.2
200837.9
200943.7
201044.8
201146.8
  • Part 1: Find a retrogradation standard for this new, updated postulates set (1976-2011). Explain your system.
  • Part 2: How courteous does it fit? Explain your exculpation and reasoning.
  • Part 3: Use your standard to foreshadow the accoutrements in 2017.
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