Jawaban:
jawabnya C. 16 anak
Penjelasan dengan langkah-langkah:
60 . 3 = 180
70 . 7 = 490
80 . 6 = 480
90 . 12 = 1080
100 . 2 = 200
------------------------+
= 2430
lalu di bagi frekuensinya
3 + 7 + 6 + 12 + 2 = 30
2430 : 30 = 81 ( rata ratanya )
di bawah rata rata = 6 + 7 + 3 = 16 siswa
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Jawaban:
jawabnya C. 16 anak
Penjelasan dengan langkah-langkah:
60 . 3 = 180
70 . 7 = 490
80 . 6 = 480
90 . 12 = 1080
100 . 2 = 200
------------------------+
= 2430
lalu di bagi frekuensinya
3 + 7 + 6 + 12 + 2 = 30
2430 : 30 = 81 ( rata ratanya )
di bawah rata rata = 6 + 7 + 3 = 16 siswa