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Dear r-help users, I have the following simple problem: Reading data from a file. The file is a .txt file exported ("save as...") from Excel (see below for an example). The Excel file consists of two header rows (first row consists of ticker symbols of stocks, the second row consists of column explanations ("Date","Px Last"), followed by several rows of

Dear all, I want to compute the average of the three blocks for each x-variable which is equal slide in the code below. How can I do that ? block x1 x2 x3 x4 x5 1 23 22 23 24 23 1 21 25 26 21 39 1 23 24 22 23 23 2 20 21 23 24 28 2 32 23 34 24 26 2 19

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