code: def variance_larger_than_standard_deviation(x):
      
      y = np.var(x)
      return y > np.sqrt(y)
docs: Boolean variable denoting if the variance of x is greater than its standard deviation. Is equal to variance of x
      being larger than 1
  
      :param x: the time series to calculate the feature of
      :type x: numpy.ndarray
      :return: the value of this feature
      :return type: bool