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Why is a graph used in an experiment?

Answer and explanation

Correct answer: To show relationships and trends in data

A graph changes a table of separate values into a visual pattern. It can show whether one variable increases, decreases, remains steady, or changes irregularly as another variable changes. This makes comparisons easier and helps the investigator notice relationships, trends, unusual readings, and possible conclusions. The axes must be labelled with the variables and suitable units so that the graph is interpreted correctly.

Option C is correct because graphs are used to display relationships and trends in experimental data. They are not mainly for decorating a laboratory or counting instruments, and they should never be used to hide a hypothesis or inconvenient result. For example, plotting water amount against plant height may show whether greater watering is associated with growth under the tested conditions.

Related tags

GraphData TrendExperimental ResultsHypothesis And ExperimentationExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScienceClass 9 Mcq

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