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2 Unit AS 2: Applied Mathematics

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Question 80

A regression line for life expectancy, z z\,z years, on an air-quality score, xxx, is z=76.8+0.703xz=76.8+0.703xz=76.8+0.703x.

a.

Estimate z z\,z when x=10.5x=10.5x=10.5.

[1]
b.

Interpret the gradient.

[1]
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2 Unit AS 2: Applied Mathematics Questions

  1. A Level
  2. /Maths
  3. /2 Unit AS 2: Applied Mathematics

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