Question

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	6	12	16	24
y	60	95	140	150	189

Use a calculator to verify that

x = 61,  x² = 1021,  y = 634,  y² = 90,446,  and   xy = 9,366.

Compute r. (Round your answer to three decimal places.)

Let x be the average number of employees in a group health insurance plan, and let y be the average administrative cost as a percentage of claims.

x	3	7	15	30	73
y	40	35	30	27	17

Use a calculator to verify that Σx = 128, Σx² = 6512, Σy = 149, Σy² = 4743, and Σxy = 2866. Compute r. (Round your answer to three decimal places.)
r =

Answer 1