The correct answer is -Graphs are considered a judgemental aid; devices that help the practitioner or experimenter interpret the results of a study or treatment.

Graphs are visual tools used to present any information quickly and easily.

What is the role of graphs in psychology?

Graphical representations are useful for introducing and understanding the concept of variation, as well as for examining the sources and impact of variance on observed data, which are among the main goals of psychological research.
Graphs are among the most appropriate tools for increasing transparency and providing credibility to such a decision.
Thus, accurate visual representation of data plays a key role in the interpretation of research findings and is a truly inferential statistical tool.
Hence, graphs are judgemental aid which interpret the results of a study or treatment.

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