probability of a stimulus

[liwenna]

You got it working?

On Jun 18, 4:33 pm, Sara Agosta <sara.ago... at gmail.com> wrote:
> thank you!
> Sara
>
> 2009/6/18 David Vinson <d.vin... at ucl.ac.uk>
>
>
>
> > saraag wrote:
> > > I have present one stimulus on the slide display, but the choice will
> > > be between two stimuli, with a probability of 66% for stimulus1 and
> > > 34% for stimulus2.
>
> > One way to do this would be to draw this item from a List containing two
> > items:
> > stimulus1 (weight 66) and stimulus2 (weight 34).  If you want exactly 66%
> > and
> > 34% you could sample without replacement from this List; if approximately
> > 66/34
> > is good enough, you could sample with replacement.
>
> > -dpv
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