Question

12. Case Study Based - 4 100m Race
A stopwatch was used to find the time that it took a group of students to run 100m
0-20 20-40
40-60
60-80
80-100
Time
(in sec
No. of
students
8
13
6
3
a) Estimate the mean time taken by a student to finish the race
) 54 ) 63 ) 43 1v) 50
b) What will be the upper limit of the modal class?
TV 80
c) The sum of lower limits of median class and modal class is
MB 80 iv) 140
di How mam students finished the race within 1 minute?
1) 18 ii) 37
iii) 31 iv) 8​

Answer 1

Answer:

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