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= 935 / 37,4
Banyak anak = 2+3+5 = 10 anak
36 x 3 = 108
37 x 7 = 259
38 x 2 = 76
39 x 3 = 117
40 x 5 = 200
total = 935
Rata rata = jumlah/ frekuensi
= 935/25
= 37, 4
Berarti yang berat badannya tidak kurang dari rata rata ada 10 orang