# Predicting Life Expectancies from Birth Rates

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Might we be able to predict life expectancies from birthrates?

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 per one thousand people in the population, and, the female life expectancy (in years), are given. Also shown are the scatter plot for the data and the least-squares regression line.

Might we be able to predict life expectancies from birth rates?

Below are bivariate data giving birth rate and life expectancy information for each of twelve countries. For each of the countries, both X, the number of births per one thousand people in the population, and Y, the female life expectancy (in years), are given. Also shown are the scatter plot for the data and the least-squares regression line. The equation for this line is ŷ= 82.74x - .5x.

In the drop down for 1 and 2, the choices are greater than or less than.

© BrainMass Inc. brainmass.com June 3, 2020, 9:14 pm ad1c9bdddfhttps://brainmass.com/statistics/correlation-and-regression-analysis/predictions-from-the-least-squares-172569

#### Solution Preview

1) This is a downward sloping line so as birthrate increases life expectancy decreases. So, with higher than mean life expectancies we would expect lower than mean birthrates (on ...

#### Solution Summary

In this Solution the author explains each answer and provides calculations. 140 words.