HYPOTHESIS TESTING 程序包 符号

# VarianceRatioTest

performs a test with null hypothesis .

## 更多信息更多信息

• To use , you first need to load the Hypothesis Testing Package using Needs["HypothesisTesting`"].
• gives a -value for the test that the ratio of the variances and of the populations from which and were sampled is significantly different from r.
• uses the test statistic Variance[list1]/Variance[list2]/r.
• is based on an F-ratio distribution with Length[list1]-1 and Length[list2]-1 degrees of freedom.
• The following options can be given:
•  FullReport False whether to include detailed information about a test SignificanceLevel None significance level of the test TwoSided False whether to perform a two-sided test
• With the option , also returns the ratio of sample variances, the test statistic, and the distribution used to generate the -value.

## 范例范例打开所有单元关闭所有单元

### 基本范例 (1)基本范例 (1)

A test of the ratio of population variances against 2:

 Out[2]=

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