3 types of labels or codes used in the collection and input of data?

Three types of labels or codes used in data collection and input include categorical labels, numerical codes, and alphanumeric codes. Categorical labels classify data into distinct groups, such as "male" and "female." Numerical codes represent quantitative data or can categorize items using numbers, like scores or ratings. Alphanumeric codes combine letters and numbers to create unique identifiers, often used in inventory systems or user IDs for better organization and retrieval of data.