Question

9.
The class mark of the class 20-30 is​

Answer 1

Answer:

25

Step-by-step explanation:

it is always the middle term of the given data

you can find it like this:

20+30/2

it is aplicable to find the class mark of any grouped data

Answer 2

25

Step-by-step explanation:

it is always the middle term of the given data.

you can find ot like this :

20+30/2

it is aplicable to find the class mark of any grouped data.