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Discussion

The slope of that regression line represents

  • A.the plant's overall efficiency
  • B.the ratio of the largest to the smallest monthly consumption
  • C.the energy required for each additional unit produced
  • D.the fixed consumption of the plant

Answer: C

Correct answer: the energy required for each additional unit produced

The regression of consumption against output has a slope and an intercept, and the slope is the marginal or variable component - the extra energy each further unit of production costs. The intercept is the fixed load, drawn whether anything is produced or not, and separating the two is the whole purpose of the regression.

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