Question

please answer please​

Answer 1

Step-by-step explanation:

8. Maths and Science performance is improved

9. Hindi marks are at par

10. Difference is the result of subtracting one number from another. 

11. Given that the percentage of marks obtained by students of a class in mathematics are

64,36,47,23,0,19,81,93,72,35,3,1

No. of students =12

We know mean =No. of observations(students)sum of observations(marks of student)

     =1264+36+47+23+0+19+81+93+72+35+3+1/12

                           =12474

Mean=39.5.

12.