for(int i=0;i<iters;i++){
map<string, vector<int> > randomizedGroup = getRandomizedGroups(groupSampleMap);
double ssWithinRand = calcSSWithin(randomizedGroup);
for(int i=0;i<iters;i++){
map<string, vector<int> > randomizedGroup = getRandomizedGroups(groupSampleMap);
double ssWithinRand = calcSSWithin(randomizedGroup);