Q. 134.2( 5 Votes )

# Find the median f

Answer :

To find median, Assume

Σf_{i} = N = Sum of frequencies,

h = length of median class,

l = lower boundary of the median class,

f = frequency of median class

and C_{f} = cumulative frequency

Lets form a table and convert it into exclusive - type by adjusting from both ends of a class.

So, N = 123

⇒ N/2 = 123/2 = 61.5

The cumulative frequency just greater than (N/2 = )61.5 is 65, so the corresponding median class is 15.5 - 20.5 and accordingly we get C_{f} = 33(cumulative frequency before the median class).

Now, since median class is 15.5 - 20.5.

∴ l = 15.5, h = 5, f = 32, N/2 = 61.5 and C_{f} = 33

Median is given by,

⇒

= 15.5 + 4.45

= 19.95

Thus, median is 19.95.

Rate this question :

How useful is this solution?

We strive to provide quality solutions. Please rate us to serve you better.

Related Videos

Sphere and Hemisphere16 mins

Heights and Distances-I45 mins

Resources and Development Revision28 mins

Cube and Cuboid41 mins

History - Concept and Questions57 mins

Corrosion: Types, Pros and Cons41 mins

Right Circular Cone And Frustum43 mins

Right Circular Cylinder45 mins

Magnetic Field of Circular Conductor41 mins

Magnetic Effects of Electric Current44 mins

Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Expertsview all courses

Dedicated counsellor for each student

24X7 Doubt Resolution

Daily Report Card

Detailed Performance Evaluation