question: public boolean removeLast ( ) { if ( mYVals . size ( ) <= 0 ) return false ; T entry = mYVals . remove ( mYVals . size ( ) - 1 ) ; boolean removed = entry != null ; if ( removed ) { float val = entry . getVal ( ) ; mYValueSum -= val ; calcMinMax ( mLastStart , mLastEnd ) ; } return removed ; }
target:  Removes the last Entry (at index size-1) of this DataSet from the entries array. Returns true if successful, false if not.