Easy Rules

When using ranges of numbers as response options, be sure the numbers do not overlap.

A borderline high LDL cholesterol level ranges from

  • Incorrect
  • A. 100-130 mg/dL
  • B. 130-160 mg/dL*
  • C. 160-180 mg/dL
  • Correct
  • A. 100-129 mg/dL
  • B. 130-159 mg/dL*
  • C. 160-189 mg/dL