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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

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

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.

Easy to use calculator for converting a P-value to a Z score using the inverse cumulative probability density function (cumulative PDF) of the normal distribution. Convert P to Z, calculate the standard score (Z-score) from P-value of a normally distributed outcome variable.

假设检验 (hypothesis testing)，又称统计假设检验，是用来判断样本与样本、样本与总体的差异是由抽样误差引起还是本质差别造成的 统计推断 方法。 显著性检验 是假设检验中最常用的一种方法，也是一种最基本的统计推断形式，其基本原理是先对总体的特征做出某种假设，然后通过抽样研究的统计推理，对此假设应该被拒绝还是接受做出推断。 常用的假设检验方法有Z检验、t检验、卡方检验、F检验等。 一般来说会将想要拒绝的假设设为原假设或零假设H0，想要接受的假设为 …

What is a Z Score? A Z Score, also called as the Standard Score, is a measurement of how many standard deviations below or above the population mean a raw score is. Meaning in simple terms, it is Z Score that gives you an idea of a value’s relationship to the mean and how far from the mean a data point is.

Use this calculator to compute a two-tailed P value from any Z score, T score, F statistic, correlation coefficient (R), or chi-square value. Once you have obtained one of these statistics (from a publication or even another program) the P value helps interpret its statistical significance.

为了求出z得分，我们需要得到CDF (1 - p值)的逆函数。 对于双尾事件，p值是两者“较小”概率的两倍。 只知道p值，我们假设讨论的是对称的x值。 在这种情况下，可以通过将左尾x的CDF加倍来找到p值，如下图所示。 为了求出z得分，我们需要得到p值除以2的CDF的逆函数。 注意，在本例中，下面的计算器显示了z得分的模。 单侧或双尾?

文章详细解释了p值在假设检验中的作用，指出p值低于特定阈值可表明数据存在空间自相关性。z得分用于判断空间聚集，而莫兰指数则分析空间正/负相关。当p值小于0.1或0.01时，通常认为存在空间关联；z值大于1.65或小于-1.65表示聚集或离散分布。