Yep, Your Standard Deduction is $6,300 for single.
So $7,479 - 6,300 = $1,179 Taxable Income
Tax for Single on $1,179 is $119
$536 withholding - 119 for tax = $416 Refund
Here is the IRS tax table, look it up
https://www.irs.gov/pub/irs-pdf/i1040tt.pdf
