central tendency 中心趋势 chi-square distribution 卡方分布 chi-square test 卡方检验 classify 分类 cluster analysis 聚类分析 coefficient 系数 coefficient of correlation 相关系数 collinearity 共线性 column 列 compare 比较 comparison 对照 components 构成,分量 compound 复合的 confidence interval 置信区间 consiste...
The p-value calculator calculates the p-value for Z score, T score, F score and Chi-square score. If you don't have the score you may use one of the following calculators that will compute the score and the p-value: One sample Z-test,Two sample Z-test,One sample T-test,Two-Sampl...
Simply put, a z-scoreisthe number of standard deviationsfromthe mean a data pointis. But more technically it’s a measure of how many standard deviations beloworabove the population mean a raw scoreis. A z-scoreisalso known as a standard scoreandit can be placed on a normal distribution...
t and chi square tests. But what I find confusing is that different online resources will cite different approaches, and you would think the assumptions for a basic A/B test should be pretty much the same?
zscore: array_like z-scores,按輸入數組 a 的均值和標準差進行標準化。 注意: 此函數保留 ndarray 子類,也適用於矩陣和掩碼數組(它使用 asanyarray 而不是 asarray 作為參數)。 參考: [1] “Standard score”,維基百科,https://en.wikipedia.org/wiki/Standard_score. [2] Huck, S. W.、Cross, T...
In a hypothesis test, the results are statistically significant when the test statistic exceeds a critical value. Z-tests use z-values for its test statistic. If you’re performing a t-test, use theT-Distribution Table of Critical Valuesinstead. For a chi-square test, use thechi-square tab...
A group of 100 people took some IQ test. My score was 5. So is that good or bad? At this point, there's no way of telling because we don't know what people typically score on this test. However, if my score of 5 corresponds to a z-score of 0.91, you'll know it was pretty...
Z-score Type of P-value One-tailed Two-tailed Calculate P-value Share calculator: Embed this tool: get code Related calculators P to Z Calculator Chi Square to P-value Calculator Normal CDF Calculator P-value Calculator Quick navigation:...
Z—Score模型的优点及对上市公司财务危机的预测 王 静 许平波 一 、Z模型样本的选取 本文以沪深两市1996年前上市的260家A股 公司2005年到2007年三年的平均数据作为研究对 象。1998年沪深证券交易所开始对出现异常状况的上 市公司实行“特别处理”(即ST)。从财务的角度衡量, ST公司符合本文认为企业财务状况不健康的...
构成一新的随机变量，其分布规律称为卡方分布（chi-square distribution）。 【2】设 X1,X2,...Xn相...