query: Joining aggregated values back to the original data frame
positive_passages.docid: 7274
positive_passages.text: Calculate group mean (or other summary stats) and assign to original data
negative_passages.docid: 10182
negative_passages.text: Combining values in one column (or part) when values in another column (or part) match
negative_passages.docid: 12103
negative_passages.text: How to copy values from one column to another
negative_passages.docid: 39641
negative_passages.text: How to split a data frame?
negative_passages.docid: 100133
negative_passages.text: Sum up rows from different data files
negative_passages.docid: 135139
negative_passages.text: Convert data frame to list
negative_passages.docid: 56874
negative_passages.text: How can I remove all duplicates so that NONE are left in a data frame?
negative_passages.docid: 137286
negative_passages.text: stacking columns in data.frame into one column in R
negative_passages.docid: 103108
negative_passages.text: Applying aggregate function SUM together with GROUP BY
negative_passages.docid: 139237
negative_passages.text: How to sum over duplicates?
negative_passages.docid: 29320
negative_passages.text: How can I perform this aggregate?
negative_passages.docid: 45615
negative_passages.text: Transpose Ranges repeated by row
negative_passages.docid: 27240
negative_passages.text: How to mix pairs of rows without JOIN (in a temporary table)?
negative_passages.docid: 49862
negative_passages.text: Aligning Data frame with missing values
negative_passages.docid: 33060
negative_passages.text: Inner Join Two Table, aggregating varchar fields
negative_passages.docid: 16572
negative_passages.text: pandas convert some columns into rows
negative_passages.docid: 20414
negative_passages.text: join comma delimited data column