Hi fellow experts,   I have two datasets, called them dataset1 and dataset2. In dataset1, I have variables id, score, and grade. See below:   id  score  grade 1    80    2    76 3    55 ...   Also, I have dataset2:   low high grade 86   100  A 71   85    B 60   70    C 0     59    F   Now I need to use score and dataset2 to determine the grade in the dataset 1. Anyone could help me write a code to do this? Thanks so much   ... View more