Question

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
(a) Estimate the mean time taken by a student to finish the race
(1) 54
(ii) 63
(iii) 43
(iu) 50
(b) What will be the upper limit of the modal class ?
(ii) 40
(in) 60
(lv) 80
(c) The construction of cummulative frequency table is useful in determining the
(1) Mean
(ii) Median
iii) Mode
(iv) All of the above
(d) The sum of lower limits of median class and modal class is
(1) 60
(ii) 100
(un) 80
(iv) 140
(e) How many students finished the race within 1 minute?
(11) 37
(iii) 31
(iv) 8
(D) 20
(i) 18​

Answer 1

Answer:

1. f

2. b

3. c

4. e

5.a

Step-by-step explanation:

An omnivore (/ˈɒmnɪvɔːr/) is an animal that has the ability to eat and survive on both plant and animal matter. Obtaining energy and nutrients from plant and animal matter, omnivores digest carbohydrates, protein, fat, and fiber, and metabolize the nutrients and energy of the sources absorbed.

Answer 2

Answer:

a-43

b-20

c-median

d-80

e-31

HOPE IT HELPS