MishiraMaika46181 MishiraMaika46181 10-05-2024 Matemáticas contestada Find the harmonic mean of the following distribution : Class Intervals : 0-10 ,10-20 , 20-30 ,30-40 ,40-50 ,50-60, 60-70 ,70-80 Frequency : 5 ,8 ,11 ,21 ,35, 30 ,22 ,18