Yes, hidden trends in the data can be noticed in all three forms of presentation, i.e. textual, tabular, and diagrammatic. However, the most effective way to identify hidden trends is through diagrammatic representation. Let's understand why.

Textual Presentation:
In textual presentation, data is presented in the form of paragraphs or sentences. It is difficult to identify patterns and trends in data presented in this format. It is time-consuming to analyze and extract hidden trends from the data.

Tabulation:
In tabulation, data is presented in the form of tables. It is easier to compare and analyze data when it is presented in a tabular format. However, tabulation has its limitations. It becomes difficult to analyze large volumes of data as it requires a lot of effort to identify hidden patterns.

Diagrammatic Representation:
In diagrammatic representation, data is presented in the form of charts, graphs, or other visual aids. It is easier to identify hidden trends in data presented in this format. Diagrams allow us to visualize data and identify trends easily. For example, a line graph can show how a variable changes over time, while a pie chart can represent the proportion of different categories in a dataset.

Conclusion:
Thus, while all three forms of presentation can help identify hidden trends, diagrammatic representation is the most effective way to do so. It allows us to identify trends and patterns in data easily and quickly.