Question

Problem 2
The following table indicates the marks obtained by students in a class test. Calculate the
average level of marks of the class.
4
5
6
7
8
:
0 2 3
9
Marks obtained
12
21
17 8
22 15
: 11
10 9
Number of students​

Answer 1

Endocrine glands release hormones into the bloodstream. This lets the hormones travel to cells in other parts of the body. The endocrine hormones help control mood, growth and development, the way our organs work, metabolism , and reproduction. The endocrine system regulates how much of each hormone is released.