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Confidence Intervals for the Slope of a Regression Model

AP Statistics· difficulty 4/5

Greater spread in x values

  • A

    Has no effect

  • B

    Increases SE(b)

  • C

    Decreases SE(b)

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  • D

    Sets slope to 0

Explanation

Σ(x − x̄)² in denominator; bigger x-spread → smaller SE for slope.

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