5 Differences between Control Group and Experimental Group

An experiment is a method of scientific investigation or test under controlled conditions that is made to demonstrate a known truth or examine the validity of a hypothesis.
                                         Experimental group vs Control group
Experimental Group
Control Group
It is the group that you are  conducting experiment
It is the group that you are not conducting experiment
The researcher is changing the independent variable  that he thinks will influence the dependent variable
The researcher is not changing the independent variable or set it as a standard value
A good experimental group is identical to the control group in all way except for the difference in the experimental condition (except for the variable that is changing in the experiment)
A good control group is identical to the experimental group in all way except for the difference in the experimental condition (except for the variable that is changing in the experiment)
The effect or influence of independent variable on dependent variable  is determined by comparing the experimental results with the control group
Helps to compare experimental result with non-experimental natural result (control group). It increases the reliability and validity of experimental results
Alternative hypothesis is accepted, if there is a significant difference in the dependent variables (measured or observed) of experimental group and control group
Null hypothesis is accepted, if there is  no significant difference in the dependent variables (measured or observed) of experimental group and control group
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