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Identify a Misleading or Misread Scale
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ParaPro
PPM.181 Identify a Misleading or Misread Scale
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A bar graph of median scores shows 71, 72, and 74. The vertical axis starts at 70 and ends at 75. Which explanation best evaluates the display?
A
The display is accurate only if all student scores are shown individually.
B
Medians cannot be graphed using bars.
C
The values can be read, but the shortened scale makes small median differences appear large.
D
The graph proves that a score of 74 is more than twice a score of 71.
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