code: def iqr(X):
      """Numba interquartile range function for a 1d numpy array.
  
      Parameters
      ----------
      X : 1d numpy array
          A 1d numpy array of values
  
      Returns
      -------
      iqr : float
          The interquartile range of the input array
      """
      p75, p25 = np.percentile(X, [75, 25])
      return p75 - p25
  
imports: from sktime.utils.validation._dependencies import _check_soft_dependencies
  import numpy
  import sktime.utils.numba.general
  from sktime.utils.numba.njit import njit
label_desc: Use image node_id 18 for calling a global function with example usage: iqr(X) and returns: unknown