.100m RACE
A stopwatch was used to find the time that it took a group of students to run 100 m.
Time in secs. 0-20 20-40 40-60 60-80 80-100
No. of
students
8 10 13 6 3
a. Estimate the mean time taken by a student to finish the race.
(I ) 54
(ii) 63
(iii) 43
(iv) 50
b. What wiil be the upper limit of the modal class ?
(i) 20
(ii) 40
(iii) 60
(iv) 80
c. The construction of cumulative frequency table is useful in determining the
(i ) Mean
(ii) Median
(iii) Mode
(iv) All of the above
d. How many students finished the race within 1 minute?
(i) 18
(ii) 37
(iii) 31
(iv) 8
Answers
Answered by
2
Answer:
a.50
b.60
c.meiden
d.31
Answered by
2
Answer:
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