Jawaban:
Rata-rata = 24+25+25+27+27+28+28+29+30+40/10 = 283/10 = 28,3
jadi berat badan yang di bawah rata-rata ada 7 anak
Alternatif Penyelesaian
Rata-rata
= xi / fi ( Jumlah data / Banyak data )
Jumlah data ( xi ) = 24 + 25 + 25 + 27 + 27 + 28 +28 + 29 + 30 + 40
= 283
Banyak data ( fi ) = 10
283 / 10 = 28, 3
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Jawaban:
Rata-rata = 24+25+25+27+27+28+28+29+30+40/10 = 283/10 = 28,3
jadi berat badan yang di bawah rata-rata ada 7 anak
Alternatif Penyelesaian
Rata-rata
= xi / fi ( Jumlah data / Banyak data )
Jumlah data ( xi ) = 24 + 25 + 25 + 27 + 27 + 28 +28 + 29 + 30 + 40
= 283
Banyak data ( fi ) = 10
283 / 10 = 28, 3