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2 Unit 2: Applied Mathematics A

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Question 72

For 30 observations, the regression line for predicting y y\,y from x x\,x is y=51.2−1.35xy=51.2-1.35xy=51.2−1.35x.

a.

Describe the association indicated by the gradient.

[1]
b.

Estimate y y\,y when x=14x=14x=14.

[2]
c.

The observed value when x=14x=14x=14 is y=29y=29y=29. Calculate the difference between the observed and predicted values.

[2]
Markscheme

2 Unit 2: Applied Mathematics A Questions

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

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