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Repeated Trials

Class 9 Science के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

ScienceOnly one measurement was taken at each value of the independent variable. Which change would make the results more reliable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceThe mean result increased in support of a hypothesis but the data had a very large spread. What is the most appropriate interpretation?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceWhich option would most improve the precision of measurement?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceA student tests the effect of water temperature on the rate of sugar dissolving. Which result would most strongly support a causal relationship?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceWhich result would suggest that the hypothesised effect may be very small?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceA student hypothesises that more fertiliser will increase plant growth. Which result would provide the strongest support?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceA student measured reaction time manually. What is the best way to improve the reliability of the results?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceIn an experiment reaction time decreased as temperature increased. Which type of data would be most useful to support the hypothesis?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceA student predicts that a reaction will be slower in cold conditions and records only reaction time. Which additional information would strengthen the conclusion?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceA student performs three identical trials before calculating a mean. What is the main benefit?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceIn which situation will an experimental result be more reliable?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium