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An experiment has a continuous independent variable. What does this mean?

Answer and explanation

Correct answer: It can take many numerical values within a range

The answer is C. A continuous independent variable is a factor that can be changed through a range and can take many numerical values, often including decimal values. For example, temperature may be 20°C, 20.5°C, or 20.55°C, and time may be 2 s or 2.4 s. A, only two names, describes neither continuity nor numerical variation. B, no value, is opposite to the meaning of a variable; it must have a value. C is correct because many values are possible within a range. D, always controlled, confuses independent with controlled: the independent variable is changed, while controlled variables are kept the same. Exam cue: continuous means measurable on a scale, not merely two categories; examples include length, mass, temperature, and time.

Related tags

Continuous VariableIndependent VariableMeasurementVariables In An ExperimentExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScienceClass 9 Mcq

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