Obtain a density plot of the daily long returns of Dollar-Euro exchange rate.

To obtain a density plot of the daily long returns of Dollar-Euro exchange rate, you can follow these steps:

1. Collect the daily exchange rate data of Dollar-Euro from a reliable source such as Yahoo Finance or Quandl.
2. Calculate the daily long returns by taking the natural logarithm of the ratio of current exchange rate to the previous day's exchange rate.
3. Use a programming language such as R or Python to plot the density of the daily long returns.
4. Here is an R code example to create a density plot:

library(ggplot2)

# read in exchange rate data
exchange_rate <- read.csv("exchange_rate.csv")

# calculate daily long returns
exchange_rate$log_returns <- log(exchange_rate$rate) - log(lag(exchange_rate$rate))

# plot density
ggplot(exchange_rate, aes(x = log_returns)) +
  geom_density(fill = "blue", alpha = 0.5) +
  labs(title = "Density Plot of Daily Long Returns of Dollar-Euro Exchange Rate")

This will produce a density plot of the daily long returns of Dollar-Euro exchange rate.