SOLUTION: The following table shows the average life expectancy, in years, of a child born in the given year. Year Life Expectancy 2005 77.6 2007 78.1 2009 78.5 2011 78.7 2013 78.8

Algebra ->  Linear-equations -> SOLUTION: The following table shows the average life expectancy, in years, of a child born in the given year. Year Life Expectancy 2005 77.6 2007 78.1 2009 78.5 2011 78.7 2013 78.8       Log On


   

Question 1197609: The following table shows the average life expectancy, in years, of a child born in the
given year.
Year Life Expectancy
2005 77.6
2007 78.1
2009 78.5
2011 78.7
2013 78.8
a. Find the equation of the regression line, and explain the meaning of its slope.
b. Plot the data points and the regression line.
c. Explain in practical terms the meaning of the slope of the regression line.
d. Based on the trend of the regression lines, what do you predict as the life
expectancy of a child born in 2019?
e. Based on the trend of the regression line, what do you predict as the life
expectancy of a child born in 1580? 2300?

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!

Hi  
.
c. Explain in practical terms the meaning of the slope of the regression line.
  life expectancy increasing 

d. Based on the trend of the regression lines, what do you predict as the life
expectancy of a child born in 2019? y = .15x +223.01 = 79.8 rounded

e. Based on the trend of the regression line, what do you predict as the life
expectancy of a child born in 1580? 2300?
 Plug and Play: y = .15(1580) +223.01  & .15(2300)-223.01

  Generally the trend line equation is not used as a predictor
with values so beyond the scope of the Data.

Wish You the Best in your Studies.