The following data are final grades of 60 students in Statistics. XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX From the grouped...

The following data are final grades of 60 students in Statistics.
78 75 77 81 87 76
73 78 85 76 86 79
79 90 93 85 83 87
85 87 91 80 84 85
86 83 84 81 79 81
84 83 82 85 80 84
88 85 80 82 79 80
79 81 74 79 83 78
80 76 75 88 81 76
75 74 79 87 80 78
From the grouped frequency distribution of the data, calculate the following:


_{Q1, Q3, P20, P25, P75, P90, D3, D5, D8 and D9}