There should be only one independent variable in an experiment so that the fair judgement can be done and there may be a cause and effect relationship between variables.
Given that the experiment contains independent variables.
We are required to find the number of independent variables that an experiment should contain and what is present in that experiment.
An experiment is basically a procedure carried out to support or refute a hypothesis, or determine the efficacy or likelihood of something previously untried.
There can be two types of variables that can be present in an experiment and they are dependent variables and independent variables.
In order to achieve good and accurate results an experiment should have one independent variable so that the effect on the independent variable on dependent variable can be studied in a better way.
Hence there should be only one independent variable in an experiment so that the fair judgement can be done and there may be a cause and effect relationship between variables.
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