Question

What does L mean in this image?

Answer 1

$\huge\mathfrak\pink{anSwEr}$

here L means lower limit of the class interval....

like..

is the class interval is 15-20

then its liwer limit or L is 15

$\huge{\bf{\blue{\fbox{\underline{\color{orange} {hoPe\:iT\:heLpS\:!! }}}}}}$

Answer 2

Here L means sum from F3X3 to F(n-1)X(n-1).

And in deno sum from de to f(n-1).