Data refers to pieces of information that can be collected, analyzed, and used to make decisions. It can come in various forms, such as numbers, text, images, or sounds. In today's digital world, data is generated constantly through activities like online shopping, social media interactions, and sensor readings. Data is essential for many fields, including science, business, and healthcare. By examining data, organizations can identify trends, improve services, and solve problems. For example, data analysis helps companies understand customer preferences, while medical data can lead to better patient care and treatment options.