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State whether the following is true or false.
Colour hue is an appropriate visual variable for showing an ordered sequence such as low, medium and high.

  • A.False
  • B.True only at large scales
  • C.False only at small scales
  • D.True

Answer: A

Hues have no natural order, so a reader cannot tell whether red outranks green without consulting the legend each time. Value or a single-hue sequence of increasing darkness carries order directly and should be used instead.

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