Please answer fast!!!
A School organised a camp for training students for athletic meet. The condition for selection was that the weight of a student should be 45-55 kg. For this purpose the weights of 30 students of Class-Vill were taken and recorded as follows (in kg)-
42, 56, 64, 47, 54, 66, 57, 58, 44, 50, 49, 59, 62, 70, 40, 56, 56, 56, 43, 47, 60, 63, 49, 54, 58 45, 47, 49, 64, 54
(a) Prepare a frequency distribution and draw a histogram for the above data.
(b) In what weight range do most students lie?
(c) How many students got selected for the training?
(d) What percentage of students weigh more than 55kg?
(e) What factors are responsible for so many children being overweight and obese these days?
(f) How can healthy eating habits be developed amongst the students of this age group?
Who will answer correct and fast I will mark them as brainlist
Plzzzzz ..... Answer fast it's urgent!!!!
Answers
Answered by
5
Step-by-step explanation:
The following table shows the number of students and the time they utilized daily for their studies. Find the mean time spent by students for their studies by direct method.
Time (hrs.) 0 - 2 2 - 4 4 - 6 6 - 8 8 - 10
No. of students 7 18 12 10 3
ANSWER:
Class
(Time in hours) Class Mark
xi Frequency
(Number of students)
fi Class mark × Frequency
xifi
0 - 2 1 7 7
2 - 4 3 18 54
4 - 6 5 12 60
6 - 8 7 10 70
8 - 10 9 3 27
∑fi=50 ∑xifi=218
Mean =
∑xifi
∑fi
=
218
50
= 4.36 hours
Hence, the mean time spent by students for their studies is 4.36 hours.
Similar questions