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Similar to the bins method, this also requires your data set to expand: just by but we only need to add a single column, and a single row, instead of blindly duplicating every row.
This means that your set is completely re-usable for other work, your calculations shall continue to work as expected and regardless as to the size of your data, you shall only be increasing this size by 1 row, which keeps data pipelines low and server resources stable.
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