'Loads both the ground truth and the test lists. The two lists must have the same length.
:param ground_truth: a list of real values (aka ground truth). E.g: [3.0, 1.0, 5.0, 2.0, 3.0]
:type ground_truth: list
:param test: a list of predicted values. E.g: [2.3, 0.9, 4.9, 0.9, 1.5]
:type test: list'

def load(self, ground_truth, test):

    self.load_ground_truth(ground_truth)
    self.load_test(test)
