The data on the right are birth rate and income ratio for a sample of 12 developing countries. Birth rate Income ratio Y. (a) Calculate the R value for the regression of the birth rate on the income Brazil 28 8.2 ratio. Colombia 40 8.5 (b) Is the part (a) result the same as the square of correlation coefficient? Costa Rica 38 6.8 India 27. 5.6 Меxico 45 7.0 Peru Philipphes Senegal South Korea 32 5.7 32 4.8 45 3.4 37 3.5 Sri Lanka 31 4.1 Taiwan 35 26 (a) R =D (Round the final answer to three decimal places as needed. Round all intermediate values to three decimal places as ne (b) Is the part (a) result the same as the square of correlation coefficient? O Yes O No

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