What is the importance of diagram in statistics​

In the presentation of statistical data, diagrams are very useful. Diagrams are geometrical figures such as lines, rows, circles, squares, and so on. Data can be presented in a diagrammatic format to make it easier to understand. It is easier to understand and shows patterns to the statistics to understand what's going on at a certain amount of by the use of x and y-axis...

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A diagram is essentially a picture that communicates information. You can often explain statistical data and other important information, like how a particular system functions, quickly and with less of a strain on resources.

delegated (sometimes called enumerated or expressed) powers are specifically granted to the federal government in article i, section 8 of the constitution. this includes the power to coin money, to regulate commerce, to declare war, to raise and maintain armed forces, and to establish a post office.