Hello! I hope it's okay to ask stats questions... I think the calculations are correct, but I would appreciate it if someone could check for me! These are the results from the exp. using repeated measures. My hypothesis is that the reuslts in condition 2 should be less than condition 1. Cond 1 49 41 42 44 44 42 66 57 44 66 66 59 Cond 2 43 39 36 42 48 41 38 44 34 40 32 43 I know working out the standard deviation is tedious, but I checked with excel and it matched (I used n-1, so I got the population, not just the sample). So, for condition 1: mean=51.66666667 s.d.= 10.36895132 standard error= 2.99325842 and condition 2: mean= 40 s.d.= 4.51260859854 standard error= 1.30267789 These (I think) are correct, its the t-test, p value and effect size I would greatly appreciate some feedback for. For the t-test I used the realted t-test, since its repeated measures (same participant in both): I got t= 3.346118674 are the units sd? and DoF would be 11, and since I specified a direction, I got p=0.003261139 (one-tailed); which is significant? since P is less than 0.05? and for effect size: I got (d)= 1.567935986 Can somone verify the t-test, effect size and p value for me? Please! I used fractions at some points where I could quickly get the data (I wrote it down), in ideal circumstances should I use fractions for all the 'inputs' (e.g. stand. dev of difference, etc.), if possible, since its more 'accurate'? Thanks! I now it's a lot to ask, but I would geratly appreciate it! I realise the formuale are slightly different depending on the narue of the experiment, I think I chose the right ones!