Mean = (1.75 + 1.63 + 1.55 + 1.92 + 1.81 + 1.79 + 1.81) / 7 = 1.751
Median = Arrange the values in ascending order, if the total number of values in data set is odd the middle value is median
1.55, 1.63, 1.75, 1.79, 1.81, 1.81, 1.92
Percentile = 1.55, 1.63, 1.75, 1.79, 1.81, 1.81, 1.92
A = (nk)/100
= (7 x 20)/100 = 1.4
=> 2nd value in data set, which is 1.63
