Find the mode of the following frequency distribution. Class 0-10 10-20 20-30 30-40 40-50 50-60 60-70 Frequency 8 10 10 16 12 6 7

Mode is the one which has the highest frequency
Here the class 30-40 has the highest frequency 16
Modal class is 30-40
Lower boundary of modal class is l=30
Height of each class is h=10
modal frequency is fm=16
Frequency of class preceding to Modal class is f1=10
Frequency of class succeeding to Modal class is f2=12
Mode=l+h(fm-f1/2fm-f1-f2)=30+10×16-10/2×16-10-12=30+6=36