statistics

void Data::UpdateStatistics() {
  uint8_t nCount;
  DataType Sum = 0;
  DataType SumSqr = 0;
  DataType Value = 0;

  for (nCount = 0; nCount < VECTOR_POSITIONS; nCount++) {

    Value = m_DatapointArray[nCount];
    Sum    += Value;
    SumSqr += Value * Value;
  }

  m_StdDev = sqrt( (m_nNumSamples * SumSqr) - (Sum * Sum) ) / m_nNumSamples;
  m_Average = Sum / m_nNumSamples;
}