GRE Problem Solving Question 338

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Source: 150math

Each of the following linear equations defines y as a function of x for all integers x from 1 to 100. For which of the following equations is the standard deviation of the y-values corresponding to all the x-values the greatest?

  • A
  • B
  • C y = x
  • D y = 2*x + 50
  • E y = 3*x – 20

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