Take note that the class length of initial two classes is 5 and there after it is 10.
Mean:
x̄ = \(\frac{Σf}{xn}=\frac{4167.5}{116}\) = 35.93 quintals
Median:
M class = Class that includes (n / 2)th observation
= Class that includes (116 / 2)
= 58th observation
Referring to colunm cf, M class = 30 – 40
