Question

For the distribution CLASS 0- 5 5- 10 10- 15 15- 20 20- 25 FREQUENCY 10 15 12 20 9 Find the sum of upper limits of median class and modal class. ​

Answer 1

Step-by-step explanation:

To find the median class, calculate the cumulative frequency for all classes and then add up the given frequencies . The result obtained : 10+15+12+20+9= 66

Then you need to divide the value 'n' by 2: 66/2 = 33

Then check the cumulative frequency list for nearest values greater than 33 i.e. 37 in the above case.

By comparing it with classes we can find the median class and it's upper limit. i.e. 15.

To find the modal class, check the frequencies and select the one having highest frequency and it's class. i.e. 20

Therefore, the sum of u.p of median class and modal class = 15+20= 35