avgScore = {
let avgScore = {}
for (let clas of classes) {
avgScore[clas] = {appearances: 0, score: 0};
}
for (let team of data) {
for (let clas of team.classes) {
avgScore[clas].appearances++
avgScore[clas].score += team.score
}
}
for (let clas of classes) {
avgScore[clas].score /= avgScore[clas].appearances
}
return avgScore
}