According to the NPS, park rangers seeking permanent employment (not seasonally, like summer park rangers) earn starting salaries anywhere from $20,908 for a GS-5 to $31,680 for a GS-9. The employee level and salary depends on the experience and college degree of the applicant.
UNDERSTANDING YIELD CURVES A yield curve is a line graph that illustrates the relationship between the yields and maturities of fixed income securities. Yield curve graphs provide a quick way to review and compare the yields that different types of fixed income securities offer, and to determine investor expectations for market conditions in the future.
The Z-spread, ZSPRD, Zero-volatility spread or Yield curve spread of a mortgage-backed security (MBS) is the parallel shift or spread over the zero-coupon Treasury yield curve required for discounting a pre-determined cash flow schedule to arrive at its present market price.ince the Z-spread uses the entire yield curve to value the individual cash flows of a bond, it provides a more-realistic valuation than an interpolated yield spread based on a single point of the curve, such as the bond's final maturity date or weighted-average life.