Mathematics TERM II
Class 10 Session 2021-2022
Case Study Questions 03
100 m Race:
A stopwatch was used to find the time that it took a group of students to run 100 m.
|Time (in sec.)||0-20||20-40||40-60||60-80||80-100|
|No. of students||8||10||13||6||3|
1. The estimated mean time taken by a student to finish the race is