Math Problem Statement
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.)What is the slope of the least-squares regression line for these data?
Solution
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Math Problem Analysis
Mathematical Concepts
Statistics
Regression Analysis
Formulas
Least-squares regression formula
Theorems
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Suitable Grade Level
College Level
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