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Independent groups t-test

KNIME Statistic Nodes version 4.3.0.v202011191636 by KNIME AG, Zurich, Switzerland

Computes statistics for the independent groups t-test, also know as the two sample t-test. It is designed to compare the means of observations in the same column between two groups. The node allows the testing of equality of variances (Levene's test) and the t-value for both equal- and unequal-variance. It also provides the relevant descriptive statistics.

Options

Grouping column
Column holding the grouping information data.
Grouping one
All rows of the input table which have this this value in the grouping column are assigned to group one.
Grouping two
All rows of the input table which have this this value in the grouping column are assigned to group two.
Confidence Interval (in %)
The limits for the confidence interval are computed using this number. The default is 95 which means that you can be 95% confident that the true value of the parameter is in the confidence interval.
Test columns
A independent groups t-test is performed separately for each of these columns.

Input Ports

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The Input

Output Ports

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Statistics for the independent groups t-test.
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Statistics for the Levene-Test.
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Descriptive statistics of the input.

Views

Test statistics
Tables with descriptive statistics of the input columns and test statistics of the independent samples t-test.

Best Friends (Incoming)

Best Friends (Outgoing)

Workflows

Installation

To use this node in KNIME, install KNIME Statistics Nodes from the following update site:

KNIME 4.3

A zipped version of the software site can be downloaded here.

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Developers

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