Question

00m RACE
A stopwatch was used to find the time that it took a group of students to run 100m.

Time(in sec)
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. 1m
(i) 54 (ii) 43 (iii) 63 (iv) 50
(b) What will be the lower limit of the median class? 1m
(i) 20 (ii) 40 (iii) 60 (iv) 80
(c) Mid values are used in calculating 1m
(i) Mean (ii) Median (iii) Mode (iv) All of these
(d) How many students finished the race after a minute? 1m
(i) 3 (ii) 6 (iii) 9 (iv) None
(e) The sum of upper limits of median class and modal class is: 1m
(i) 60 (ii) 80 (iii) 100 (iv) 120

Answer 1

Answer:

1. d

2.b

3.d

4.c

5.a

so this isthe right answer