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Linear Regression Models

AP Statistics· difficulty 3/5

A z-score regression line is fit to standardized variables zx and zy.

Standardized regression x and y standardized to zx, zy mean(zx) = mean(zy) = 0 sd(zx) = sd(zy) = 1 slope of LSRL of zy on zx = ?

The slope of the line equals:

  • A

    The correlation r

    check_circle
  • B

    1

  • C

    sy/sx

  • D

    0

Explanation

For standardized variables, slope = r * (1/1) = r.

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