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2 Statistics

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Question 205

For one observation, x=6x=6x=6 and y=12y=12y=12. The fitted regression model is y=1.9x+1y=1.9x+1y=1.9x+1.

a.

Calculate the fitted value and residual.

[2]
b.

Interpret the sign of the residual.

[1]
c.

State one feature a residual plot should show if a linear model is appropriate.

[1]
Markscheme

2 Statistics Questions

  1. A Level
  2. /Maths
  3. /2 Statistics

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