Question

How to find the median class of a grouped data? If cumulative frequency have a and b in them , and when a and b are unknown.

Answer 1

Here you have given the sum of frequency so one equation you have made in term of a and b.

And you also have given median class of grouped data so you can find it by put in formula

l+((n\2)-c\f))×h

if you have not given sum of frequency and median class to find a and b then your question will wrong.

Answer 2

$\huge\boxed{\underline{\underline{\purple{\mathfrak{Answer}}}}}$

$take \: the \: \frac{n}{2} th \: term \\ \frac{ \frac{n}{2} + cf }{f} \times h \\ where \: n = total\: of \: all \: frequency \\ cf = cumiliative \: frequency \\ f = frequency \\ and \: h = class \: interval$

$<marquee direction="left">$ follow the above mentioned steps^_^