Find the median marks for the following data :

Answer

The median marks is 49.

Explanation

Here, `N=100,(N)/(2)=50.cf` which is just greater than 50 is 68.
`:.` the corresponding class 45-55 is the median class
`L=45,f=30,cf-38,h=10`
Median `=L+[((N)/(2)-cf)/(f)]xxh`
`=45+(50-38)/(30)xx10`
`45=+(12)/(3)=45+4=49`