At a gymnastics competition, joey scored 9.4, 9.7, 9.9, and 9.8. carlos scored 9.5, 9.2, 9.7, and 9.6. who had the greater average score? by how many point was his score higher?

You got add all the numbers up and divide it by how many numbers there are to get the average.
9.4 +9.7 + 9.9 + 9.8 = 38.8 divided by 4 =9.7 is Joey's average.
9.5 +9.2 +9.7 +9.6 =38 divided by 4 = 9.5 is Carlos' average.
Joey has more average by 0.2.