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VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Psychology => Topic started by: hearthesamba on June 12, 2012, 04:49:06 pm

Title: extraneous variable v confounding variable?
Post by: hearthesamba on June 12, 2012, 04:49:06 pm

hey guys, just wondering if anyone knows the difference between an extraneous variable and a confounding variable? they seem very similar, so I'm a bit confused! cheers

Title: Re: extraneous variable v confounding variable?
Post by: DylanBurrowes on June 12, 2012, 04:54:05 pm

There are two types of extraneous variable:
- Confounding (essentially acts as another IV, renders experiment useless)
- Non-confounding (effects experiment and control in some way, may or may not cause failure of experiment, e.g. temperature of room at time of experiment)

Hope that helps!

Title: Re: extraneous variable v confounding variable?
Post by: HiddenUser on June 12, 2012, 04:58:53 pm

Confounding variable basically means the extraneous variables took effect.

Extraneous = Possibly effecting
Confounding = Has effected

Title: Re: extraneous variable v confounding variable?
Post by: hearthesamba on June 12, 2012, 05:04:22 pm

thanks guys! means a lot  :)