The face value of a bond is $1,000. The bond is redeemable at par after 7 years and the coupon rate is 14% and the yield to maturity is 15%. The coupon is paid semi-annuallys The bond is callable and can be called after 3 years at $978.65. If the bond is held till maturity, what is the duration and volatility of the bond? give correct calculation using formula and show the given data don't use of theory