Difficulty in pow function for ZScore calculation

[Kal_Lam]

@dedik2urniawan, when you pull data the values are stored in text format. To make calculations you will need to transform the text to integers as outlined in the post discussed previously:

How to convert a text into a number?

@lazasoa, you could use the int() function or the number() function to convert a string to an integer as outlined in the image shared below: In the survey tab of your xlsform: [Image 1] Data entry screen as seen in Enketo: [Image 2] Reference xlsform: String to integer.xlsx (10.6 KB)