Which of the following is an example of unstructured data?

Unstructured data refers to information that does not have a predefined data model or structure, making it more complex and harder to analyze compared to structured data. Images and videos are prime examples of unstructured data because they lack a specific format or organization that makes them easily interpretable by traditional data processing methods. Instead of being organized in rows and columns like structured data, these media types contain rich information that requires advanced analysis techniques, such as image recognition or video analysis, to extract meaningful insights.

In contrast, product catalogs and sales reports typically follow a structured format with consistent data organization, often based in spreadsheets or databases, thus easily searchable and analyzable. Statistical databases are also highly structured, designed for efficient query and data manipulation, leading to organized data representations.