Tables are used in a controlled experiment to organize and present data in a clear and organized manner. By presenting data in a table, researchers can easily compare and analyze the results of different treatments or variables. This can help them identify trends and patterns that may indicate a causal relationship between the experimental variables. Tables also help ensure consistency, accuracy, and transparency by providing a standardized format for recording and reporting data. Additionally, tables can facilitate communication between scientists and help them to draw meaningful conclusions from the data generated by their experiments.