The Normal Distribution

The Normal Distribution and Standard Deviation normal distribution Standardising A Standard Normal distribution has μ=0 μ = 0 and σ=1 σ = 1 A non-standard Normal random variable X X , which has mean μ≠0 μ ≠ 0 andor normal distribution Characteristics of a Normal Distribution · Approximately 68% of values in the distribution are within 1 SD of the mean, , above or below P

normal distribution The total area under the normal curve is equal to 1 And, the probability that a normal random variable X is less than positive infinity is equal to 1; that is,