wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Question 14(ii)
50 students enter for a school javelin throw competition. The distance (in metres) thrown are recorded below :

Distance (inm)02020404060608080100Number of students 6 11 17 12 4


(ii) Draw a cumulative frequency curve (less than type) and calculate the median distance thrown by using this curve.

Open in App
Solution

Distance (in m)Cumulative frequency(cf)0 0Less than 20 6Less than 40 17Less than 60 34Less than 80 46Less than 100 50
To draw less than type ogive. we plot the points (0,0),(20,6),(40,17),(60,34),(80,46),(100,50), join all these points by free hand.
Now, N2=502=25



Taking Y=25 on Y-axis and draw a line parallel to X-axis, which meets the curve at point A. From point A, we draw a line perpendicular to X-axis, where this meets that point is the required median i.e.49.4.


flag
Suggest Corrections
thumbs-up
2
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Median
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon