Control Groups - How big?

Control Groups - How big?
Message posted by Michele Zuniga (via 24.25.195.14) on October 11, 2001 at 1:55 PM (ET)

When conducting research using an experimental group and a control group, is there a formula that dictates the size of the control group?

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Re: Control Groups - How big?
Message posted by Tomi (via 154.32.143.231) on October 12, 2001 at 2:54 AM (ET)

I would say that having the control group the same size as the experimental group is a good idea.

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