The following is the formula for finding the mode of grouped data. State what p and q are.
Mode = p+q−f0(q−f0)+(q−f2)×h
p = l, lower limit of modal class; q=f1, frequency of modal class
The formula for mode is given by,
Mode = l+f1−f0(f1−f0)+(f1−f2)×h,where,
l = lower limit of modal class
h = size of class interval
f1 = frequency of modal class
f0 = frequency of class preceding modal class
f2 = frequency of class succeeding modal class
So, p = l = lower limit of modal class
And, q = f1 = frequency of modal class.