Let me put forward a dissenting opinion. What you should display in your graph is neither of these but a boxplot which will give a true picture of the distribution of values that you found rather than a statistical inference which depends as much on the number of participants you used as any difference in performance between the two groups. You are going to do a statistical test anyway (and you could quote an effect size) so why waste the opportunity to give more information?
Yours - Stuart Rosen
On 11/12/2011 01:18, Vijay M R Marimuthu wrote:
When we have a d' group result (between 2 experiments),
A. Which ERROR BAR is most appropriate to use (Binomial Distribution) ?
95 % confidence Interval or Standard Errors of the Mean.