Normal Distribution

Normal Distribution

1. Binomial Distribution

2. mean, standard deviation & variance

   • mean = mode = median
   • X ~ N(µ, σ^2) means the variable X is normally distributed with mean µ, standard deviation σ
     • Total area under the graph = 1
       • Probability between two values
         • Solving with a calculator
         • Solving with the z-value table
           • Standardising the normal distribution
         • Percentage points (reverse probability)
           • Unknown mean or standard deviation
             • z = (x - µ)/σ
           • Sample mean (x̄)
             • The distribution of the sample mean
               • The Central Limit Theorem
     • Probability is measured by area, not by height
   • Probabilities of standard deviations

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