Which of the following formulae correctly depicts the mode of a modal class?
Frequency of modal class
Cumulative frequency of previous class
Frequency of preceeding class
Frequency of succeding class.
Mode of a modal class =
l+f1−f02f1−f0−f2×h
In the formula for mode of a grouped data, mode =l+[f1−f02f1−f0−f2]×h , where symbols have their usual meaning, f1 represents ___.