+double TrialSwap2::getSD (int runs, vector<double> scorevec, double nullMean)
+{
+ 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/runs) * sum );
+}
+/**************************************************************************************************/
+double TrialSwap2::get_zscore (double sd, double nullMean, double initscore)
+{
+ map<double, double> ztable;
+
+ ztable["0.00"] = 0.5;
+
+ double z;
+
+ z = (initscore - nullMean) / sd;
+
+ return z;
+}
+/**************************************************************************************************/