String variables refer to data that involve words or letter strings.

String variables refer to data that involve words or letter strings.

• A. Are restricted to numeric codes.
• B. Are always boolean indicators.
• C. Are not used in regression analysis.
• D. Involve words or letter strings.

Answer: (D)

String variables store text data—the actual words, letters, or other characters entered by respondents. The essential idea is that these variables hold characters rather than numbers, and they have a defined width or length for the amount of text they can contain. Because of this, they’re not limited to numeric codes. They aren’t inherently boolean indicators either, since booleans are true/false values and string data can be any text. While you can use string information in analyses after encoding (for example, converting categories to numeric codes or creating dummy variables), you don’t use raw string data directly in standard regression as-is. So the choice that says string variables involve words or letter strings accurately captures what they are.

String variables store text data—the actual words, letters, or other characters entered by respondents. The essential idea is that these variables hold characters rather than numbers, and they have a defined width or length for the amount of text they can contain. Because of this, they’re not limited to numeric codes. They aren’t inherently boolean indicators either, since booleans are true/false values and string data can be any text. While you can use string information in analyses after encoding (for example, converting categories to numeric codes or creating dummy variables), you don’t use raw string data directly in standard regression as-is. So the choice that says string variables involve words or letter strings accurately captures what they are.