Question

Find mean for the following frequency distribution using step deviation
method.
Marks
Less Less Less Less Less Less Less Less
than 10 than 20 than 30 than 40 than 50 than 60 than 70 than 80
5 13 20 32 60 80 90 100
​

Answer 1

Answer:

don't no sir ji

.........

Answer 2

Answer:

$\huge\pink{\boxed{\green{\mathcal{\overbrace{\underbrace{\fcolorbox{red}{aqua}{\underline{☠idk☠}}}}}}}}$