Construct a grouped Frequency distribution table (FDT) using I = 3.

86, 83, 81, 81, 83,86, 79,82
81,80,96, 87,82,89,82,68,
71,62,90,82,85,88,71,99,
76, 87,78,80,83,73,98,72,
72,83,74,85,90,71,75,87​