DEFINITION of 'Empirical Duration'
The calculation of a bond's duration based on historical data. Empirical duration is estimated statistically using historical marketbased bond prices and historical marketbased Treasury yields. When the historical yields change, the historical bond prices will change accordingly, which forms that basis for empirical duration. Regression analysis is the statistical process used to estimate empirical duration.
Duration is the percentage change in a bond's price with a 100basispoint change in yield.
BREAKING DOWN 'Empirical Duration'
The calculation of empirical duration has some advantages and disadvantages over other duration calculations, such as effective duration or modified duration. The advantages of using empirical duration include that the estimate does not rely on theoretical formulas and analytic assumptions, and the only inputs needed are a reliable series of bond prices and a reliable series of Treasury yields.
Some disadvantages are that a reliable series of a bond's price may not be available, and the series of prices that is available might not be market based, but rather modeled or matrix priced (the price is based on a similar security).

Dollar Duration
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Effective Duration
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Modified Duration
A formula that expresses the measurable change in the value of ... 
Interest Rate Sensitivity
A measure of how much the price of a fixedincome asset will ... 
Duration
A measure of the sensitivity of the price (the value of principal) ...

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Why You Should Avoid Fixating on Bond Duration
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Why Bondholders Should Manage Duration Risk
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Use Duration And Convexity To Measure Bond Risk
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The Basics Of Bond Duration
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Investing
What Does Duration Mean?
Duration measures a fixedincome’s sensitivity to changes in interest rates. 
Investing
Immunization Inoculates Against Interest Rate Risk
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What’s the Difference Between Duration & Maturity?
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Investing
Calculating the Macaulay Duration
The weighted average term to maturity of the cash flows from a bond. 
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Which is a better metric, modified duration or Macaulay duration?
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