A Linear Approximator for the Class Marks of a Grouped Frequency Distribution, with Especial Reference to the Unequal Interval Case
Dennis J. Aigner · Technometrics · 1968
D. J. Aigner, A Linear Approximator for the Class Marks of a Grouped Frequency Distribution, with Especial Reference to the Unequal Interval Case, Technometrics, Vol. 10, No. 4 (Nov., 1968), pp. 793-809