Question

1. Define data . What are the main source
of data ?​

Answer 1

Data are characteristics or information, usually numerical, that are collected through observation. In a more technical sense, data are a set of values of qualitative or quantitative variables about one or more persons or objects, while a datum (singular of data) is a single value of a single variable.

Following are the two sources of data:

1. Internal Source

2. External source