[R] How to calculate the monthly average from daily data

[Subhamitra Patra]

Dear R-users,

I have daily data from 03-01-1994 to 03-08-2017. In my datafile, The first
column is date and the second and third columns are the returns and volume
data. I want to estimate the average returns, and volumes for each month,
then, I want to export the results into excel.

So please help me in this regard.

Please find the attached datasheet.

Thank you.

-- 
*Best Regards,*
*Subhamitra Patra*
*Phd. Research Scholar*
*Department of Humanities and Social Sciences*
*Indian Institute of Technology, Kharagpur*
*INDIA*

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09/12/19,
03:40:34 PM