Answered: Below are bivariate data giving…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Below are bivariate data giving birthrate and life expectancy information for each of twelve countries. For each of the countries, both the number of births x per one thousand people in the population and the female life expectancy y (in years) are given. These data are displayed in the Figure 1 scatter plot. Also given is the product of the birthrate and the female life expectancy for each of the twelve countries. (These products, written in the column labelled " xy ", may aid in calculations.) Birthrate, x (number of births per 1000 pop.) Female life expectancy, y (in years) xy 27.4 73.3 2008.42 46.9 58.6 2748.34 31.2 62.9 1962.48 25.3 74.5 1884.85 14.3 77.5 1108.25 36.0 67.1 2415.6 12.2 73.1 891.82 48.9 62.7 3066.03 52.1 58.3 3037.43 19.5 74.7 1456.65 41.0 64.1 2628.1 49.6 54.0 2678.4 Send data to calculator Female life expectancy (in years) y 50 55 60 65 70 75 80 85 x 10 15 20 25 30 35 40 45 50 55 60 Birthrate What is the sample correlation coefficient for these data? Carry your intermediate computations to at least four decimal places and round your answer to at least three decimal places.

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