<em>Test group is a group that is modified or </em><em>changed by the researcher </em><em>and is then compared to the </em><em>experimental group while carrying out an experiment. </em>
Explanation:
While observing the data of the test group, it has to be compared with the control group to see if there is any effect of the treatment on the test or not. The control can be positive or negative or both to which the test group is compared.
There is no clear evidence which indicates that cell phones will cause cancer because they emit very low intensity of radio waves but it can cause other diseases. Diseases such as brain tumor, male infertility and ear hearing function can be adversely affected by using cell phones due to the radio wave they emit. So we can say that cell phones will not the cause of cancer disease.
