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Value of the standard deviation change

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An economics professor gives her students an exam. The exam scores have a mean of 75 and a standard deviation of 9. How would the value of the standard deviation change if the professor added 5 points to each students exam score?

  • it would stay the same
  • it would increase by 5
  • it would be multiplied by 5
  • it would increase by 25

Reference no: EM131045073

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