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The data is subjected to t-test, which is mainly used for normal distribution with small sample size and unknown population standard deviation. The t-test is to use the t distribution theory to infer the probability of the difference, so as to compare whether the difference between two averages is significant.

 

How-To-Use:

The front node of this node needs to have the output of the data set.

 

Precautions:

When selecting one-sample t-test, only one field can be selected

When choosing a paired sample t-test, only two fields can be selected

❖Configuration

After adding the T-test node to the experiment, you can set the T-test node through the "Configuration" page on the right.

[Test type] There are two inspection types: one_sample_Ttest and paired_sample_Ttest. One_sample_Ttest: compare whether the difference between the sample mean and the overall mean is significant (single-sample t test).  Paired_sample_Ttest: compare whether the difference between the two column paired sample means is significant (paired sample t test).

[Population mean] Enter the population mean of the one-sample t-test.

Right-click menu of T-test node:

❖Run T-test Node

Run the node, pass the data to DM-Engine for calculation, and get the output result.

 

❖Reset T-test Node

The node that has been running is reset, the returned result is deleted, and the node status is changed to not running.

 

❖Rename T-test Node

In the right-click menu of the T-test node, select "Rename" to rename the node.

 

❖Refresh T-test Node

In the right-click menu of the T-test node, select "Refresh" to update the synchronization data or parameter information.

 

❖Save as Composite Node

In the right-click menu of the T-test node, select "Save as Composite Node",The selected node can be saved as a composite node to realize a multiplexing node, and the parameters of the saved node are consistent with the original node.

 

❖Cut T-test Node

In the right-click menu of the T-test node, select "Cut" to realize node cutting operation.

 

❖Copy T-test Node

In the right-click menu of the T-test node, select "Copy" to realize node  replication operation.

 

❖Delete T-test Node

In the right-click menu of a T-test node, select "Delete" or click the delete key on the keyboard to delete the node and its input and output connections.