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

ScienceIf the dependent variable first increases and then decreases as the independent variable rises what is the risk of taking only the first two values?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceIf only two very close values of the independent variable are used in an experiment what is the main difficulty?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceA student changes the distance from a magnet and measures attraction force. Changing distance from (2,\text{cm}) to (10,\text{cm}) is an example of what?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceA student's conclusion is based only on the mean although individual measurements vary widely. What additional information is most needed?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceIf an experiment uses only two widely separated values of the independent variable what limitation arises?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceIn an investigation the range of results is very wide although the means of two groups are equal. Which information is important for the conclusion?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard