Calculate the nominal and effective rate of interest for the following ordinary annuity. Determine the nominal interest rate whose compounding interval equals the payment interval.

Ordinary Annuity

Homogeneous financial installments disbursed at the cessation of individual periods across a confirmed timeline.

Nominal Interest

The interest rate stated on a loan or investment agreement before any adjustments for compounding or inflation.

Effective Rate

Another term for the effective interest rate, emphasizing its real cost or yield accounting for compounding and other factors.