How to calculate r using ba ii plus? N= 12 PV = $1000 FV = $1061.68 Pg 327 vol I in cfa book

Do you mean the interest rate with r?

If so, PV=-1,000; FY=1061.68; N=12; PMT=0; CPT I/Y Gives you an interest rate of 0.5%

Regards, Oscar

be sure to put negative sign before PV while you input in calculator.