Jawaban:
50,50,50,60,60,60,60,60,70,70,70,70,70,70,70,80,80,80,80,90
= 20 data
Rata rata : data ke 10 dan ke 11
Rata rata : 70 + 70 /2
Rata rata : 70
B. 67,5
Penjelasan dengan langkah-langkah:
Rata²
= 50 x 3 + 60 x 5 + 70 x 7 + 80 x 4 + 90 + 1 / 3 + 5 + 7 + 4 + 1
= 150 + 300 + 490 + 320 + 90 / 20
= 1.350 / 20
= 67,5
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Jawaban:
50,50,50,60,60,60,60,60,70,70,70,70,70,70,70,80,80,80,80,90
= 20 data
Rata rata : data ke 10 dan ke 11
Rata rata : 70 + 70 /2
Rata rata : 70
Verified answer
Jawaban:
B. 67,5
Penjelasan dengan langkah-langkah:
Rata²
= 50 x 3 + 60 x 5 + 70 x 7 + 80 x 4 + 90 + 1 / 3 + 5 + 7 + 4 + 1
= 150 + 300 + 490 + 320 + 90 / 20
= 1.350 / 20
= 67,5