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Need help with the wording of code for script in R. Plot the histogram of daily returns on data for January 2020, and the time

Need help with the wording of code for script in R.

Plot the histogram of daily returns on data for January 2020, and the time plot of data returns for January 2021.

What is the wording for the code in this format: ggplot(data, aes(x=datareturn)) + geom_histogram()

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