Statistical significance measures the reliability of a result obtained from random experiment. We investigate number repetitions needed for statistical to have certain significance. In first step, we consider binomially distributed variables in example medication testing with fixed placebo efficacy, asking how many experiments are order achieve 95%. next take probability distribution efficacy i...

a statistical report of 912 battle casualtiesadmitted in a special unit of the neurological surgery department during 49 months of the recent war was given. methods of their evaluation, operative categories, management poli¬cies including techniques of missile and bullet removal, and their complications were discussed.

functional magnetic resonance imaging (fmri) is a safe and non-invasive way to assess brain functions by using signal changes associated with brain activity. the technique has become a ubiquitous tool in basic, clinical and cognitive neuroscience. this method can measure little metabolism changes that occur in active part of the brain. we process the fmri data to be able to find the parts of br...