Calculate the letter grade for students using "F" or "IFS function. b Calculate the average, median, and standard deviation of students score 90 80 70 60 60 C XXX 90 80 70 60 60 D F F Grade Score Grade Average Median Std Student ID Score 1000 85 1001 52 1002 82 1003 86 1004 67 1005 86 1006 72 1007 84 1008 95 1009 58 1010 86 1011 89 1012 61 1013 57 1014 BO 1015 65 1016 98 1017 57 1018 73 1019 74 1020 81 1021 97 1022 82 1023 50 1024 64 1025 51 1026 52 1027 78 1023 75 1029 58 1030 78 Student ID 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 86 89 61 57 80 65 98 57 73 74 81 97 82 50 64 51 52 78 75 58