var scores = {Taro: 72, Ken: 93, Tom: 85, John: 68};
// この下にコードを書いてください
var sum = 0;
var cnt = 0;
for(var k in scores){
console.log(k+'さんは'+scores[k]+'点です');
sum += scores[k];
cnt++;
}
var ave = sum/cnt;
console.log('平均点は'+ave+'点です。');
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