Question

Year of Birth Life Expectancy 1930 59.7 1940 62.9 1950 70.2 1965 69.7 1973 71.4 1982...

Year of Birth Life Expectancy
1930 59.7
1940 62.9
1950 70.2
1965 69.7
1973 71.4
1982 74.5
1987 75
1992 75.7
2010 78.7

What is the slope of the least-squares (best-fit) line?

Round to 3 decimal places.

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

The statistical software output for this problem is:

Hence,

Slope = 0.227

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