Question

during the medical check up of 35 students of a class their weights were recorded as follows. Obtain its median from drawing a graph with less than and more than ogive​

Answer 1

Answer:

Median = 46.5

Step-by-step explanation:

First convert the table into cumulative weight table as shown below.

Weight in KG Number of students

Less than 38           0

Less than 40           3

Less than 42           5

Less than 44           9

Less than 46          14

 Less than 48 28

 Less than 50 32

 Less than 52 35

From this table, it is clear that total students are 35.

Draw the above table in graphical format.

On X - Axis, weights and on Y Axis - number of students under that weight.

See the attached image for the graph drawn with above data.

From the data we know that n = 35. To find mean draw a horizontal line at n/2 = 17.5.

This horizontal line go and cut the graph at a point.

Draw a vertical line from there onto X Axis. This will intersect the X axis at 46.5.

This is the median weight for the 35 students.