+double TrialSwap2::getSD (int runs, vector<double> scorevec, double nullMean)
+{
+ try{
+ double sum = 0;
+ for(int i=0;i<runs;i++)
+ {
+ if (m->control_pressed) { return 0; }
+ sum += pow((scorevec[i] - nullMean),2);
+ }
+ return sqrt( (1/double(runs)) * sum );
+ }
+ catch(exception& e) {
+ m->errorOut(e, "TrialSwap2", "getSD");
+ exit(1);
+ }
+}
+/**************************************************************************************************/
+double TrialSwap2::get_zscore (double sd, double nullMean, double initscore)
+{
+ try {
+ return (initscore - nullMean) / sd;
+ }
+ catch(exception& e) {
+ m->errorOut(e, "TrialSwap2", "get_zscore");
+ exit(1);
+ }
+}
+/**************************************************************************************************/