Deductions & credits

I am using the Deluxe TT desk top version. I answered all the personal questions by following the TT prompts in the Step by Step interviews. I have also checked the forms where the answer were transferred to.  They all reflect that I am not a dependent of any tax payer.   My federal standard deduction is $13,800 for a single person. Since I am 30 years of age, I do not qualify, nor am I anyone's dependent.  I should be able to mark the NO box or leave it blank since the question does not apply to me.  But when I mark No, TT drastically changes the amount I would get back, and I end up paying instead.