7.14 Calculate proportion using aggregation information of data of the same group

 

Here below is an annual and quarterly sales data table:

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The following code is to calculate the proportion of each quarterly sales to the total sales of the year (calculate in cell D1):

=spl("=E(?1).group(Year).((a=~.sum(Sales),~.(Sales/a))).conj().new(~:Proportion)",A1:C21)

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