Despite the June 2019 date on this thread, this is a much older post. It is no longer possible to enter scholarship at "Less common Income" /"Visit All" in the TurboTax software. Scholarships must be entered at Deductions and Credits / Educational expenses.
Earned Income is reported on a W-2 or 1099-Misc. Graduate student stipends are scholarships, not wages. That's why you didn't get a W-2 or 1099-Misc.
That said, if you want to treat it as earned income (the original poster wanted to make an IRA contribution), the easiest way is to treat it as self employment income. But, then, you will have to pay FICA-self employment tax, in addition to any income tax. There is no way to enter it as wages, in TurboTax, except in inappropriate complicated work around.
