Mean nilai ulangan diaats adalah.... Question from @KLJN

ErichelFr

Mean = jumlah data/banyak data

$\:$

= (60 × 7) + (70 × 8) + (80 × 10) + (90 × 3) + (100 × 2)/(7 + 8 + 10 + 3 + 2)

= 420 + 560 + 800 + 270 + 200/30

= 2250/30

= 75

opsi b

2 votes Thanks 1

maulidyakania1

JAWABAN

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Mean = Rata - rata

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Penyelesaian :

» Rata - rata «

$\sf = \frac{jumlah \: data}{banyaknya \:data }$

$\sf = \frac{(60 \times 7) + (70 \times 8) + (80 \times 10) + (90 \times 3) + (100 \times 2)}{7+8+10+3+2}$

$\sf = \frac{420 + 560 + 800 + 270 + 200}{7+8+10+3+2}$

$\sf = \frac{2.250}{7+8+10+3+2}$

$\sf = \frac{2.250}{30}$

$\sf = 75 \: (b)$

Kesimpulan :

Jadi, mean nilai ulangan di atas adalah 75

I Hope This Help-!

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1 votes Thanks 1

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