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)	52	37	31	9	26	40	22	10	45	34	19	60
Grade on Test	95	84	72	58	77	86	72	43	90	81	62	98

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.

Year	Competitors*	Year	Competitors*	Year	Competitors*
1976	2.1	1987	22.5	1997	31.4
1977	4.8	1988	23.5	1998	32.4
1978	9.8	1989	25	1999	32.5
1979	11.5	1990	25.8	2000	30
1980	14	1991	26.9	2001	24
1981	14.5	1992	28.6	2002	32.5
1982	14.3	1993	28.1	2003	35.3
1983	15.2	1994	31.1	2004	37.3
1984	14.6	1995	29	2005	37.6
1985	16.7	1996	29	2006	38.4
1986	20.5	* 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.

Year	Competitors (in thousands)
2007	39.2
2008	37.9
2009	43.7
2010	44.8
2011	46.8

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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