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Summary Statistics for a Quantitative Variable

AP Statistics· difficulty 3/5

If Y = 2X + 5 and X has SD 3, then SD of Y is

  • A

    6

    check_circle
  • B

    11

  • C

    3

  • D

    8

Explanation

SD(aX + b) = |a|·SD(X) = 2·3 = 6.

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