I have corrected my alpha level using Šidák correction to take into account the experiment-wise error rate, as I am doing multiple correlation tests using the same data set.
My new alpha is 0.00056.
I tried using SPSS but the p threshold (alpha) seems to be either 0.01 or 0.05 and the p value of the correlation is given only in three decimal places.
For example, SPSS returns the p value of one of my correlations as 0.000 and indicated it is significant at 0.01. However, my p threhold is not 0.01 but 0.00056.
How do I determine if this correlation is significant? How do I work out the extact p value at 4 decimal points, which will then enable me to compare it with 0.00056. Is there an easy to use but reliable online calculator, or is this adjustment possible in SPSS?