Standard normal distribution calculator
The Normal distribution, also known as the Gaussian distribution, is a very important probability distribution in the fields of mathematics, physics, and engineering, and has a significant influence in many aspects of statistics. The expected value μ = 0, that is, the normal axis of the curve image symmetry axis is the Y axis, and the standard deviation σ = 1, which is denoted as N (0, 1).
Standard normal distribution
The standard normal distribution, also known as the u distribution, is a normal distribution with 0 as the mean and 1 as the standard deviation, denoted as N(0,1).
The area distribution under the standard normal distribution curve is: the area under the curve in the range of -1.96 to +1.96 is equal to 0.9500, and the area under the curve in the range of -2.58 to +2.58 is 0.9900.
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