The given histogram shows the heights of 232 students of an athletic club and their numbers.
Study the histogram carefully and answer the questions that follows.
If the histogram is to be presented by a line diagram, what would be the starting point and the end point of the line diagram?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. (117.5,0) and (172.5,0)
Class size = Upper limit - Lower limit
Class size = 125 - 120 = 25
Therefore, mid - point of a class = 5/2 = 2.5
So, starting point,
X - cordinate = 120 - 2.5 = 117.5
Y - coordinate = frequency of point = 0
Starting point = (117.5, 0)
End point of line graph,
X - coordinate = 170 + 2.5 = 172.5
Y- coordinate = frequency of point = 0
Therefore, end point = (172.5, 0)
Required points are (117.5, 0) and (172.5, 0)