Calculator to find out the z-score of a normal distribution, convert between z-score and probability, and find the probability between 2 z-scores.

Free Standard Normal Distribution Calculator - find the probability of Z using standard normal distribution step-by-step

先看z≤0.54的p值，对照下图，首先看表格最左边那一列，找到0.5，然后，因为0.54的第二位小数是4，所以定位到顶行找到“4”那一列，得到0.7054；同样的方法，我们找到z≤-0.77对应的p值0.2206。

Z 值代表随机变量经过列维-林德伯格中心极限定理的变形后，服从标准正态分布Φ（0,1），并且Z为该标准正态分布下的新变量。 在数量上表示该新变量为该标准正态分布下标准差σ=1的倍数。 Z Z Z 值以及显著性水平的统计含义。 设在机器正常情况下，生产出的样本长度均值为. α \alpha α 时，现在我们要判断机器是否出了问题。 我们构造一个中间量. z = x ‾ − u 0 σ ～ N ( 0 , 1 ) z =\frac {\overline {x} - u_0} {\sigma} ～ N (0,1) z = σx−u0 ～N (0,1) σ \sigma σ 为总体标准差。 但绝大 …

2022年6月28日 · z=(x−μ)/σ. 将z-score和表中对应，可得出样本在整个分布中的水平. 例：李华的托福成绩为86，假设托福考试均值(μ)为59.6，标准差(σ)为20，并且符合正态分布. 通过计算: z = (86- 59.6)/20 = 1.32. 得李华的z分位数为 1.32，即超过了90.66%的同学. 标准正态分布表 ⬇️

This p-value calculator helps you to quickly and easily calculate the right-tailed, left-tailed, or two-tailed p-values for a given z-score. It also generates a normal curve and shades in the area that represents the p-value

To find out the Z score we use the formula. Z Score = (Observed Value – Mean of the Sample)/standard deviation. Z score = ( x – µ ) / σ. Z score = (800-700) / 180. Z score = 0.56.

Use this P to Z calculator to easily convert P-values to Z-scores (standard scores) and see if a result is statistically significant. Supports one-tailed and two-tailed p-values. Detailed information about what a Z-score is.

Enter mean, standard deviation and cutoff points and this calculator will find the area under standard normal curve. The calculator will generate a step by step explanation along with the graphic representation of the probability you want to find. What is normal distribution? The normal distribution is characterized by two parameters.

Calculator to compute p-value from Z-score or Z-score from p-value for a normal distribution. It also provides a diagram illustrating the area of the p-values.