Nilai rata-rata / mean = 75
Data : 65, 70, 85, 75, 95, 60, 85, 80, 90
Jawab :
75 = 65+70+85+75+95+60+85+80+90+x
----------------------------------------------------
10
75×10 = 705+x
750 = 705+x
x = 750-705
x = 45Jadi Nilai Yang Belum Tercatat Adalah 45
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Nilai rata-rata / mean = 75
Data : 65, 70, 85, 75, 95, 60, 85, 80, 90
Jawab :
75 = 65+70+85+75+95+60+85+80+90+x
----------------------------------------------------
10
75×10 = 705+x
750 = 705+x
x = 750-705
x = 45
Jadi Nilai Yang Belum Tercatat Adalah 45