Question: Explain the difference between SAS formats and informats.

Answer: Formats are used to control the appearance of data values in output, while informats are used to read data values during input. They are applied using the FORMAT and INFORMAT statements, respectively.

Example:

DATA formatted_dataset; SET original_dataset; FORMAT date_variable DATE9.; /* Apply format to date variable */ INPUT name $20. age height; /* Apply informat to age and height variables */ INFORMAT age 3. height 5.; DATALINES; John 25 180 Alice 30 165 ; RUN;

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