Suppose a class has 7 students. The average marks of these students in the mathematics examination

28th June Shift 2, JEE MAIN 2022 Statistics Variance of ungrouped data of limit Suppose a class has 7 students. The average marks of these students in the mathematics examination is 62, and their variance is 20. A student fails in the examination if he/she gets less than 50 marks, then in worst case, the number of students can fail is [Answer → 0 ]