With Q1 = 55 and Q3 = 70, which value is an outlier?

  1. 72
  2. 90
  3. 45
  4. 95
Answer

D) 95

Upper fence = 70 + 1.5 × 15 = 92.5 and lower fence = 32.5, so only 95 lies outside. SLO CS-11-D-03

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