Mode = l + [$\frac{f1-f0}{(2f1-f0-f2)}$]h. The modal class is the class with highest frequency. f0 = frequency of class before modal class, f1 = frequency of modal class, f2 = frequency of class after modal class. Empirical relation: Mode ≈ 3Median - 2*Mean (approximate, useful for quick verification). Mode is the least tested of the three central tendency measures in JEE.