Are you using both parameters in the round function?
Round(4.05) = 4
Round(4.05,1) = 4.1
That second parameter is the number of decimals you want to use.
Thank you for your reply. I have not applied the round function yet. I'm just wondering how I should apply it so that only one of my measures is rounded to the nearest tenth instead of the nearest one. Attached is a screenshot of the calculated field with a list of the measures included in that field.
Never mind, I used another way to solve the problem.
I think Tableau wasn't being very responsive when I first tried to change the Measure's Data Type. I tried changing the Data Type of the Measure again and it's displaying the original number of decimal places in the data source.