Given data is 5, 3, 4, 1, 2, 6, 4, 2, 2, 3, 1, 5, 6, 1, 2.
Arranging the data in ascending order, we have
1, 1, 1, 2, 2, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6.
Mean=Sum of all observationsTotal number of observations=1+1+1+2+2+2+2+3+3+4+4+5+5+6+615=4715=3.13
Mode = Most frequent occuring value in the given data = 2
Here, n = 15 (odd)
Median = Value of (n+12)th observation = Value of (15+12)th observation
= Value of 8th observation = 3