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Mean (μ, x̄)

  • (Arithmetic) average
  • Sum of all observations divided by the number of observations
  • Formula:   \mu = (x1+ x2+ …+ xi)/ n
  • Example: 

Set of numbers: \mu  = 3, 4, 5, 5, 5, 6, 7 = (3 +4 +5 +5 +5 +6 +7)/ 7 = 35/ 7= 5

 

 

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