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If results keep varying in an experiment what should be the first improvement?

Answer and explanation

Correct answer: Check the procedure and controlled variables

Direct answer: A, check the procedure and controlled variables. Repeatedly changing results suggest that the experiment is not being performed consistently, an instrument may be unreliable, or another variable is changing. Step by step: write the method clearly, keep temperature, amount, time, measuring position, and other relevant conditions constant, check the instrument, repeat trials, and record every result. A is correct because it investigates sources of variation before judging the hypothesis. B selects evidence by preference and creates bias. C declares success without sufficient evidence. D deletes inconvenient data and is scientifically dishonest. Memory cue: inconsistent results require control and checking, not selective reporting.

Related tags

Inconsistent-ResultsControlled-VariablesProcedureHypothesis And ExperimentationExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScienceClass 9 Mcq

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