Jawaban:
2. rata rata ulangan siswa
= 7+9+9+7+10+6+8+5+6
= 61
=61 ÷ 9
= 7,44
jadi rata rata nilai ulangan mereka = 7'44
3. rata rata tinggi badan
=125 × 15 = 2,280
=130 × 15 = 1,950
=135 × 10 = 1,350
=140 × 20 = 2,800
________+______+
60 8,830
= 8,830 ÷ 60
= 139,66
jadi rata rata tinggi badan adalah 139,66 cm
Jawab:
1. mean =
=
= 7,4
2. mean =
= 132,91
_________________________________________________________
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Jawaban:
2. rata rata ulangan siswa
= 7+9+9+7+10+6+8+5+6
= 61
=61 ÷ 9
= 7,44
jadi rata rata nilai ulangan mereka = 7'44
3. rata rata tinggi badan
=125 × 15 = 2,280
=130 × 15 = 1,950
=135 × 10 = 1,350
=140 × 20 = 2,800
________+______+
60 8,830
= 8,830 ÷ 60
= 139,66
jadi rata rata tinggi badan adalah 139,66 cm
Jawab:
1. mean =
=
=
= 7,4
2. mean =
=
=
=
= 132,91
_________________________________________________________
Semoga membantu
Terima kasih