Question

For each of 10 popular prescription drugs, below lists the retail price for the drug in several different countris, including the US, Canada, Great Britain, and Austrailia. Determine and interpret the coefficients of correlation and determination for US prices versus Canadian prices.

DRUG US Can. GB. Aust.
Prilosec 3.31 1.47 1.67 1.29
Prozac 2.27 1.07 1.08 0.82
Lipitor 2.54 1.34 1.67 1.32
Prevacid 3.13 1.34 0.82 0.83
Epogen 23.40 21.44 27.48 29.24
Zocor 3.16 1.47 1.73 1.75
Zoloft 1.98 1.07 0.95 0.84
Zyprexa 5.27 3.39 2.86 2.63
Claritin 1.96 1.11 0.41 0.48
Paxil 2.22 1.13 1.70 0.82

Answer 1

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