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2 Unit AS 2: Applied Mathematics

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Question 231

For runners, a regression line for recovery time y y\,y minutes on training distance x x\,x km is y=18.4−0.62xy=18.4-0.62xy=18.4−0.62x.

a.

Estimate the recovery time when x=12x=12x=12.

[1]
b.

Interpret the gradient.

[1]
c.

State why using the line for x=40x=40x=40 may be unreliable if the observed distances were 5 to 20 km.

[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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