Normal Distribution Formula in Probability and Statistics
byjus.com › normal-distribution-formulaNormal Distribution Formula: \(f(x)= \frac{1}{\sqrt{2\pi \sigma ^{2}}}e^{\frac{-(x-\mu )^{2}}{2\sigma ^{2}}}\) Where μ = Mean. σ = Standard deviation. x = Normal random variable. Solved Example on Normal Distribution Formula. Example: Find the probability density function for the normal distribution where mean = 4 and standard deviation = 2 and x = 3. Solution: Given: Mean,μ = 4. Standard deviation, σ = 2. Random variable, x = 3. We know that the normal distribution formula is: \(f(x ...
Normal distribution - Wikipedia
https://en.wikipedia.org/wiki/Normal_distributionThe simplest case of a normal distribution is known as the standard normal distribution or unit normal distribution. This is a special case when and , and it is described by this probability density function: Here, the factor ensures that the total area under the curve is equal to one. The factor in the exponent ensures that the distribution has unit variance (i.e., varia…
1.3.6.6.1. Normal Distribution
itl.nist.gov › div898 › handbookThe general formula for the probability density function of the normal distribution is \( f(x) = \frac{e^{-(x - \mu)^{2}/(2\sigma^{2}) }} {\sigma\sqrt{2\pi}} \) where μ is the location parameter and σ is the scale parameter. The case where μ = 0 and σ = 1 is called the standard normal distribution. The equation for the standard normal distribution is