Data Collection is the step where raw information is gathered from different sources for analysis. Sources can include surveys, online forms, databases, APIs, and web scraping. Beginners learn step-by-step how to collect accurate and high-quality data.
Customer Feedback: [5, 4, 3, 5, 4]
Average rating = (5+4+3+5+4)/5 = 4.2 → Customer satisfaction is high.