StatisticFormula 類別參考 意見反應 定義命名空間: System.Web.UI.DataVisualization.Charting 組件: System.Web.DataVisualization.dll 計算統計公式。C# 複製 public class StatisticFormula繼承 Object StatisticFormula 備註公式可以鬆散分組成下列類別:分佈,包括反向分佈;測試;和基本統計公式。 每個群組在其輸入和傳回...
TTestResult TTestUnequalVariances (double hypothesizedMeanDifference, double probability, string firstInputSeriesName, string secondInputSeriesName); 參數 hypothesizedMeanDifference Double 資料群組的假設平均差。 probability Double Alpha 值。 可接受的範圍介於 0 和 1 之間。 firstInputSeri...
Journal of Statistical Computation and SimulationG. M. Cordeiro, S. L. P. Ferrari, A. H. M. A. Cysneiros, A formula to improve score test statistic, J. Statist. Comput. Simulation 62 (1998), 123-136.Cordeiro GM, Ferrari SLP, Cysneiros AHMA (1998) A formula to improve score test ...
How to find the test statistic will depend on which hypothesis test can be applied to a given research problem. A preliminary step is always specifying the null and alternative hypotheses, which in many cases involve competing statements about a parameter of the population in question, such as ...
1.1 Defining a Z Test If the data has a normal distribution and you want to check whether the means (average) of two populations are different, you can apply a z-test. Formulating the null and alternative hypotheses and computing the value of the z-test statistic is necessary to validate ...
Test Statistic:The chi-square statistic (chi^2) is calculated by comparing observed and expected frequencies in a contingency table. Degrees of Freedom:In a chi-square test, degrees of freedom are calculated based on the number of categories in each variable. For a contingency table with r row...
Student’s t-test, in statistics, a method of testing hypotheses about the mean of a small sample drawn from a normally distributed population when the population standard deviation is unknown. A t-test may be either two-sided or one-sided. Learn more ab
t-distribution used int-testswhen calculating the p-value. Depending on the sample size, different degrees of freedom will display different t-distributions. Calculating degrees of freedom is critical when understanding the importance of a chi-square statistic and the validity of the null hypothesis....
A one proportion z test is used when there are two groups and compares the value of an observed proportion to a theoretical one. The z test statistic for a one proportion z test is given as follows:z = p−p0√p0(1−p0)np−p0p0(1−p0)n. Here, p is the observed value of ...
F test is a statistical test that is used in hypothesis testing to check whether the variances of two populations or two samples are equal or not. In an f test, the data follows an f distribution. This test uses the f statistic to compare two variances by dividing them. An f test can...