Class A has 8 pupils and class B has 13 pupils.

Question

Both classes sit the same maths test.
The mean score for class A is 38.
The mean score for class B is 53.
What is the mean score (rounded to 2 DP) in the maths test across both classes?

Answer 1

total score / total pupils

[(8 * 38) + (13 * 53)] / (8 + 13)

Answer 2

hard

Answer 3

Too hard

Answer 4

idk what that is but....

Class A has 13 pupils and class B has 12 pupils.
Both classes sit the same maths test.
The mean score for class A is 68.
The mean score for both classes is 45.
What is the mean score (rounded to 2 DP) in the maths test for class B?

= 20.08