An experiment designed so that you can observe the differences between the experimental group and the

An experiment designed so that you can observe the differences between the experimental group and the control group.
In each experiment there have to be two groups - an experimental one (which has a different variable), and a control group. Both of these groups are subjected to the same thing except for that variable you are trying to test via an experiment.

Forensic inspection of the rom or persistent memory does not include overwritten or erased text files e-mails sent web sites visited recently password-protected records

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