Multiple choice technology programming languages

Which of the following statements is true regarding BY-group processing

  1. BY variables must be either indexed or sorted

  2. Summary statistics are computed for BY variables

  3. BY-group processing is preferred when you are categorizing data that contains few variables

  4. BY-group processing overwrites your data set with the newly grouped observations
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A Correct answer
Explanation

BY-group processing requires that the BY variables are either sorted in the dataset or indexed. SAS processes observations in groups based on BY variable values, which requires ordered data. The procedure doesn't overwrite the dataset but produces grouped output.

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