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Calculate Historical Equity Risk Premium

One way to calculate the Equity Risk Premium (ERP) is to use historical data. First, we calculate the annual difference between the stock market return and the US Treasury return. Second, we take the average of these annual differences. In this exercise, you will calculate the historical ERP using data from 1928 to 2016. For this exercise, we use the stock market return (sp_500) and US Treasury return (tbond_10yr) from Professor Damodaran's website. Both these variables are stored in the object damodaran.

Este exercício faz parte do curso

Equity Valuation in R

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Instruções do exercício

  • Calculate the difference between the stock return and the bond return each year.
  • Take the average or mean of the annual differences.

Exercício interativo prático

Experimente este exercício completando este código de exemplo.

# Review the first six rows of damodaran
head(damodaran)

# Calculate annual difference between stocks and bonds
diff <- ___

# Calculate ERP
erp <- ___
erp
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