Final answer:
The claim that FmtName, Start, and Label are necessary to create a format is false. In SAS, FmtName and Start are required, and Label is optional for clarity.
Step-by-step explanation:
The statement that the variables FmtName, Start, and Label are required to create a format from an input control data set is false. In the context of SAS (Statistical Analysis System), to create a format from a control data set using the PROC FORMAT procedure, the minimum required variables are FmtName and Start.
The FmtName variable specifies the name of the format, while Start defines the value or range of values that the format will be applied to. The Label variable, which assigns a descriptive label to the values or range of values in the format, is optional but recommended for clarity. Therefore, Label is not strictly required and hence the answer is false.