Answer / Subodh Baghel

Long format (also known as stacked or column-wise) and wide format (also called melted or row-wise) are two ways to organize tabular data in R. The main difference between them is how they handle multiple observations across variables. Long format has one observation per row, with each variable stored in a separate column, while wide format has multiple observations in a single row, with each variable stored in a separate column and each observation represented by a unique key-value pair.

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