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Verified answer
X = (9 + 12 + 13 + 15 + 21 + 26 + 30) / 7x = 126 / 7
x = 18
simpangan rata²
= |9 - 18| + |12 - 18| + |13 - 18| + |15 - 18| + |21 - 18| + |26 - 18| + |30 - 18| / 7
= (9 + 6 + 5 + 3 + 3 + 8 + 12) / 7
= 46 / 7
= 6,57
Verified answer
Mapel : Matematika WajibKategori : Statistika
Kelas : SMA / MAkelas XI
Semester : Genap
Pembahasan:
Simpangan rata - rata: