One Sample Z Test
One sample Z Test is located under Model Studio > Statistical Analysis > One Sample z-test on the left task pane. Use the drag-and-drop method (or double-click on the node) to use the algorithm in the canvas. Click the algorithm to view and select different properties for analysis.
Properties of One Sample Z-test
The Following figure shows the properties of one sample z-test
Field | Description | Remark |
Run | It allows you to run the node. | - |
Explore | It allows you to explore the successfully executed node. | - |
Vertical Ellipses | The available options are · Run till node · Run from node · Publish as a model · Publish code | - |
Task Name | It is the name of the task selected on the workbook canvas. | You can click the text field to edit or modify the task name as required. |
Features | It allows you to select the column for performing the test | Only numerical features can be selected |
Population mean | It refers to the mean value of the entire population from which the sample is drawn. | You can give any positive value as input. |
Level of significance | It is the threshold used to determine whether or not the null hypothesis is rejected. | Any value between 0 and 1 can be entered. |
Example of One sample z-test
We consider the credit card balance dataset. It includes columns like Age, balance, cards, and so on.
A snippet of input data is shown below.
We select Age as the feature and the population mean as 55.
The result page of one sample z-test is displayed below.
It provides information about the z-statistics, P-value, sample mean, and population standard deviation and whether we reject the null hypothesis or not.
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