Question

Q. Find the mean of the following
distribution :-
* Note: Use step deviation Method.
Height(in cm) No. of Students
Less than 75 5
Less than 100 11
Less than 125 14
Less than 150 18
Less than 175 21
Less than 200 28
Less than 225 33
Less than 250 37
Less than 275 45
Less than 300 50
​

Answer 1

Answer:

Nobody knows for surе when spoken language first developed — it almost certainly wasn't invented. Written language has been around since about 3,300 BC, but spoken language does not appear in the historical or fossil record, so we do not know when it first developed.

Answer 2

this is the answer thank you