17.3.6.1 The Two Sample Test for Variance Dialog Box

Supporting Information

To open the Two-Sample Test for Variance dialog box:

With the worksheet active, click Statistics: Hypothesis Testing: Two-Sample Test for Variance...

See Also:

Results Log Output	Select to output results to the Results Log.

Recalculate

Controls recalculation of analysis results

Indexed

The input data consists of one sample data column and one grouping column.

Group Range

The grouping column. Note that the grouping column will be set as categorical if Text column.

Data Range

The sample data column.

Raw

The input data consists of two sample data columns.

1st Data Range

The first sample column.

2nd Data Range

The second sample column.

For help with range controls, see: Specifying Your Input Data

1st Data Range/Group Range	First sample dataset (Raw) or grouping variable (Indexed).
2nd Data Range/Data Range	Second sample dataset (Raw) or sample dataset (Indexed).

Null Hypothesis	The null hypothesis to be tested (i.e. Variance1 = Variance2).
Alternate Hypothesis	Options: Variance 1/Variance 2 <> 1 Test whether the two sample variances are equal. Variance 1/Variance 2 > 1 Test whether the variance from sample one is larger than the variance from sample two. Variance 1/Variance 2 < 1 Test whether the variance from sample one is less than the variance from sample two.
Significance Level	Specify the significance level.
Confidence Interval(s)	Compute confidence intervals for the differences of the means.
Confidence Level(s) in %	Specifies space-separated confidence levels. This option is only available when Confidence Interval(s) is chosen.

Histogram	Create a histogram.
Box Chart	Create a box chart.
Arrange Plots of Same Type in One Graph	Note that for the histograms, layers will be arranged vertically. For box chart, layers will be arranged horizontally.

For help with the range controls, see: Output Results

Output Plot Data	Specify a worksheet for output of plotted data (Origin generates tabular data when plots are created).
Output Results	Specify the worksheet for output of test results.