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Code in R: Write code to restrict both data frames to cases in which the value of Year is 2020 and the value of Code

Code in R:

Write code to restrict both data frames to cases in which the value of "Year" is 2020 and the value of "Code" is not the empty string, "", and is not the value for the whole world,"OWID_WRL". Please display the number of rows in the resulting data frames using the function `nrow`.

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Code in R: Write code to restrict both data frames to cases in which the value of Year is 2020 and the value of Code

Code in R: Write code to restrict both data frames to cases in which the value of "Year" is 2020 and the value of "Code" is not the empty string, "", and is not the value for the whole world,"OWID_WRL". Please display the number of rows in the resulting data frames using the function `nrow`.

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Code in R:

Write code to restrict both data frames to cases in which the value of "Year" is 2020 and the value of "Code" is not the empty string, "", and is not the value for the whole world,"OWID_WRL". Please display the number of rows in the resulting data frames using the function `nrow`.