Question

calculate the means of scores of 20 students in a mathematic test​

Answer 1

Answer:

We first, find the class mark x  

i

​  

 of each class and then proceed as follows

Mean,

           

x

=  

Σf  

i

​  

 

Σf  

i

​  

x  

i

​  

 

​  

=  

20

700

​  

=35

Therefore, mean of scores of 20 students in mathematics test =35

Explanation:

Answer 2

Explanation:

how? what are the scores