Which of the following is NOT a type of input method in SAS?

In SAS, various input methods are used to read data into a SAS data set and each serves different types of data organization and input styles. The correct choice identifies an option that is not recognized as a standard input method in SAS.

Column input allows you to read data from specific fixed columns in a line of data. List input reads data values that are separated by delimiters (like spaces or commas) and doesn't require a specific structure. Free-format input enables you to read data not confined to fixed widths or specific columns, allowing more flexibility in input format.

Sequential input is not an established term in the context of SAS input methods. While one could conceptually think of sequential processing in data handling, SAS does not categorize an input method under that label. Therefore, identifying sequential input as not being an actual input method is accurate. Understanding these methods is essential for effectively using data in SAS programming.