QlikView’s Independent T-Test – When Data Speaks, We Listen!

The independent t-test is a statistical test that is used for determining whether there is significant difference between means of two independent samples. In QlikView, you can perform an independent t-test using the TTEST function.

To use this function, you need to specify the two sample sets as input arguments. The function will then return the t-statistic and the p-value, which can be used to determine the SOD between the means of the two samples.

Example: Of how you can use the TTEST function in a QlikView expression:

TTEST(sample1, sample2)

Example: In case you have a dataset that contains the sales data for two different sales territories. You can use the TTEST function to determine if there is a significant difference in the mean sales between the two territories.’

Example: How you might use the TTEST function in this case:

TTEST(Sales_Territory_1, Sales_Territory_2)

This expression would return the t-statistic and the p-value for the difference between the mean sales of the two territories. You can then use the p-value to determine the significance of this difference.

It is important to note that the independent t-test assumes that the two samples are independent and that the sample data follows a normal distribution. If these assumptions are not met, it may be necessary to use a different statistical test.

In statistics, an independent t-test, also known as a two-sample t-test, is a method used to compare the means of two independent groups. The independent t-test is used to determine whether there is a significant difference between the means of two groups.

In QlikView, you can perform an independent t-test by using the built-in function TTest. The TTest function takes two arguments, the first being the field representing the first group, and the second being the field representing the second group. The function will return the t-value, which can be used to determine the p-value and the level of significance.

For example, if you have two fields, “Sales1” and “Sales2,” representing the sales of two different products, you can perform an independent t-test to determine if there is a significant difference between the means of the two products’ sales by using the following expression:

TTest(Sales1, Sales2)

This will return the t-value, which can then be used to determine the p-value and the level of significance using a t-table.