How much should a healthy Shetland pony weigh? Let x be the age of the pony (in months), and let y be the average weight of the pony (in kilograms). x 3 12 19 y 60 140 170 173 LO USE SALT (a) Make a scatter diagram of the data and visualize the line you think best fits the data. 20 15 y (average weight (in kg)) 10 80 100 120 140 160 O x (age (in months)) 160 y (average weight (in kg)) 8 8 10 15 20 O x (age (in months)) y (average weight (in kg)) 60 80 100 120 140 160 O x (age (in months)) 8 140 y (average weight (in kg)) 120 100 80 60 10 20 O x (age (in months)) (b) Would you say the correlation is low, moderate, or strong? O low O moderate O strong Would you say the correlation is positive or negative? O positive negative (c) Use a calculator to verify that > x = 62, > x2 = 1034, > > = 638, > > = 91,054, and >xy = 9,465. Compute r. (Round your answer to four decimal places.) As x increases from 3 to 22 months, does the value of / imply that y should tend to increase or decrease? Explain your answer. O Given our value of r, y should tend to decrease as x increases. O Given our value of r, y should tend to remain constant as x increases. Given our value of r, we can not draw any conclusions for the behavior of y as x increases