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E20-007 · Question #17

E20-007 Question #17: Real Exam Question with Answer & Explanation

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Question

On analyzing your time series data you suspect that the data represented as y1, y2, y3, ... , yn-1, yn may have a trend component that is quadratic in nature. Which pattern of data will indicate that the trend in the time series data is quadratic in nature?

Options

  • A(y2-y1) = (y3-y2) = ....... = (yn-yn-1)
  • B(y3-y2) - (y2-y1) = .........= (yn-yn-1)-(yn-1-yn-2)
  • C((y2-y1) /y1 ) * 100% = .......((yn-yn-1)/yn-1) * 100%
  • D(y4-y2) - (y3-y1) = .........= (yn-yn-2)-(yn-1-yn-3)

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