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1fninaanu

Mathematics

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multiple parts

let me know if you are interested in answering a couple questions after this one. it is a timed test

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Use the data table and scatterplot for life expectancy and infant mortality to complete parts (a) through (c). Click the icon to view the data table. Click the icon to view the scatterplot. a. Insert a best-fit line in the given scatterplot. Choose the correct graph below. OA OB OC 120- . 120 100- 80-1 Q Infant mortality rate 120- 100- 80- . 60- 40- 20- 0- 50 60 70 80 90 Life expectancy (years) 60-1 40- 20- 0- 50 60 70 80 90 Life expectancy (years) Infant mortality rate 100 80- 60- 40- 20- 0+ 50 60 70 80 90 Life expectancy wears) - Life expectancy and infant mortality data table X Х b. Computer and r2. Based on the value for r?, determine how much of the variation in the variable can be accounted for by the best-fit line. r= 2=0 (Round to two decimal places as needed.) The best-fit line accounts for about % of the variation in (Round to the nearest integer as needed.) c. Briefly discuss whether one could make valid predictions from this best-fit line. Choose the best answer below. Infant mortality Country Life expectancy (years) deaths per 1,000 live births) 1 57 107 2 56 110 110 3 56 60 4 55 77 5 57 45 6 68 37 7 60 49 8 63 79 9 61 40 10 61 47 Click to select your answer(s). Save for Later
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Explanation & Answer

a. Bb. r = ...


Anonymous
I was struggling with this subject, and this helped me a ton!

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