What is the relationship between observed time normal time and standard time?

Observed time refers to the actual time taken to complete a task or process as measured in real-life conditions. Normal time is the average time required to perform a task, accounting for allowances and typical worker performance. Standard time builds on normal time by adding additional allowances for rest, delays, and other factors, ensuring that it reflects a realistic time frame for planning and scheduling. Together, these concepts help organizations optimize productivity and set realistic performance expectations.