Standard normal table - Wikipedia
https://en.wikipedia.org/wiki/Standard_normal_tableA standard normal table, also called the unit normal table or Z table, is a mathematical table for the values of Φ, which are the values of the cumulative distribution function of the normal distribution. It is used to find the probability that a statistic is observed below, above, or between values on the standard normal distribution, and by extension, any normal distribution. Since probability tables cannot be printed for every normal distribution, as there are an infinite variety of normal distribut…
1.3.6.6.1. Normal Distribution
itl.nist.gov › div898 › handbookCumulative Distribution Function The formula for the cumulative distribution function of the standard normal distribution is \( F(x) = \int_{-\infty}^{x} \frac{e^{-x^{2}/2}} {\sqrt{2\pi}} \) Note that this integral does not exist in a simple closed formula. It is computed numerically. The following is the plot of the normal cumulative distribution function. Percent Point Function
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 (or density): The variable has a mean of 0 and a variance and standard deviation of 1. The density is has its peak at and inflection points at and .