A controlled experiment is one in which a control group is closely monitored. In this way, the experiment can be much more accurate as more factors are accounted for.
A controlled experiment is better than a none controlled experiment because you can control one of them and the other you can't. Science is a really fun subject.
A control is needed in a valid experiment because without controls then more then one variable is being tested. This can mess up the results.
Yes, an experiment can have more than one hypothesis. Multiple hypotheses allow researchers to explore different potential explanations for a phenomenon. Each hypothesis can be tested separately in the experiment to determine which one is supported by the evidence.
It really depends on what the experiment is.
Gives you a more correct method of predicting which is the right one.
Yes you can, but the more variables you have the more complex the problem becomes.
The control of an experiment is one in which the independent variable is not manipulated. It is used as a comparison for all other aspects in the experiment.
The outcome of the experiment may not be linked to any one specific variable.
yes it can I've done a few experiments that have had more than one independant variable.
you can't because you will not have the right results to the experiment.In order to make sure you are getting good results from an experiment you should conduct repeated trials, use only one control group, have as many individuals as possible in both the control group and the experimental group, and test only one independent variable at a time.Hope that helped!
If you test only one variable then you know that the difference in the experimental and control setup is that one independent variable. If you test more than one you will not know which one made the difference.