parameters: (values)
return_statement: return math.sqrt(Variance(values))
docstring: Returns the population std. dev., or NaN if the input is empty.
docstring_summary: Returns the population std. dev., or NaN if the input is empty.
docstring_tokens: Returns the population std . dev . or NaN if the input is empty .
function: def StandardDeviation(values):
    """Returns the population std. dev., or NaN if the input is empty."""
    if not values:
      return float('nan')
    return math.sqrt(Variance(values))
function_tokens: def StandardDeviation ( values ) : if not values : return float ( 'nan' ) return math . sqrt ( Variance ( values ) )