Posted by Anjali Kaur on Jul 24, 2021

Finding missing Frequency in case of Median

Finding missing frequency in the case of the median involves, using the median formula as median will be given in the question. Then the application of the formula will be helpful.

Take a look:-

Feel free to join our Facebook group.

A quick note: Subscribe to our website to get answers to your curriculum questions. You can also subscribe to our YouTube channel.

Solved Question

Find the missing frequency of the group 20-30 when the median is 28.

Class IntervalFrequency
0-105
10-208
20-30?
30-4016
40-506

Solution.

In this question median is given to us as 28, this means the median class is 20-30.

Rewrite the above table and find cf.

Class IntervalFrequencyCumulative Frequency
0-1055
10-2085+8 = 13*
20-30*F1*13 + F1
30-401629 +F1
40-50635 + F1
35 + F1

Using the median formula;

We have a median, lower limit

28 = 20 + {(35+F1/2) – 13} X 10 / F1

28- 20 = {(35+F1/2) – 13} X 10 / F1

So, missing frequency is 15.

I hope it was helpful, you can refer to more posts related to the statistics.

  1. Individual Series Arithmetic Mean
  2. Discrete Series Arithmetic Mean
  3. Continuous Series Arithmetic Mean
  4. Inclusive and Exclusive Series – Arithmetic mean
  5. Introduction to the statistics.
  6. Functions and importance of statistics.
  7. Calculating Correct Arithmetic mean

Thank You!

Feel free to join our Facebook group and subscribe to this website to get daily educational content in your mailbox.

Happy Learning!


Disclosure: Some of the links on the website are ads, meaning at no additional cost to you, I will earn a commission if you click through or make a purchase.

Learn with Anjali started because there wasn't an easy-to-consume resource to help students with their studies. Anjali is on single-minded mission to make you successful!

If you would like to suggest topics, leave feedback or share your story, please leave a message.

Leave a message