For a symmetrical distribution approximately 68% of the cases are ?

  1. X¯¯¯¯3SX¯−3S and X¯¯¯¯+3S
  2. X¯¯¯¯2SX¯−2S and X¯¯¯¯+2S
  3. X¯¯¯¯SX¯−S and X¯¯¯¯+S
  4. None of these
    Right Answer: X¯¯¯¯SX¯−S and X¯¯¯¯+S

January 4, 2018   Asghar Khan    Statistic  
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