In the regression equation 
,a dummy variable d affects the slope of the line.
Definitions:
Market Rate
The prevailing interest rate available in the marketplace for investments, loans, and savings, often influenced by supply and demand forces, central bank policies, and economic conditions.
Journal Entry
A single record that reflects the debit and credit effects of a financial transaction in the accounting system.
Coupon Rate
The yearly interest yield on a bond, shown as a percent of the bond's nominal value.
Effective-Interest Method
An accounting method to amortize the discount or premium on bonds payable or receivable over the bond's life, reflecting a constant rate of interest.
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