Count all Yes from radio button

Count all Yes from radio button

I have a multiple fields with radio buttons. For all these fields only the option to select Yes or No. I would like to get a count of how many times the value Yes was selected in the row. 

Something like 
Yes + Yes + No + No = count the yes
Field 1 + Field 2 + Field 3 + Field 4 = Countif YES = 2