A source of data is any place or method from which data is collected or obtained. It refers to the origin or starting point of the information that is used for analysis or other purposes. Sources of data can be internal or external to an organization, and they can come in various formats such as digital, physical, or verbal.

Examples of internal sources of data include:

• Company databases or information systems
• Customer feedback or surveys
• Sales and transaction records
• Employee records
• Financial reports

External sources of data can include:

• Publicly available data from government agencies, industry associations, or other organizations
• Market research reports or surveys
• Social media data
• Web analytics data
• Third-party data providers

It is important to consider the quality, accuracy, and reliability of the source of data when analyzing it. The data should be verified and validated to ensure that it is relevant and appropriate for the intended purpose.