A stopwatch is used to find the time
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18. A stopwatch was used to find the time that it took a group of students to run 100 m.
0-2020-4040-6060-8080-100Time(insec)No.Ofstudentsoo1013631. Estimate the mean time taken by a student to finish the race.(i)54 (ii)63 (iii)43 (iv)502. What wiil be the upper limit of the modal class ?(i)20 (ii)40 (iii) 60 (iv)803. The sum of lower limits of median class and modal class is(1)60 (ii) 100 (iii) 80 (iv)1404. How many students finished the race within 1 minute?(i) 18 (ii)37 (iii)31 (iv)8