Observe the following frequency polygon and write the answers of the questions below it.

(1) Which class has the maximum number of students? Solution:Class 60-70 has maximum number of students (2) Write the classes having zero frequency. Solution:Class 20-30 and class 90-100 have zero frequency (3) What is the class-mark of the class, having frequency of 50 students? Solution:Frequency 50 students is for class 50-60Class mark for this class […]