Apakah varians nombor berikut: 63, 54, 62, 59, 52,

Apakah varians nombor berikut: 63, 54, 62, 59, 52,
Anonim

Jawapan:

# sigma ^ 2 = 18.8 #

Penjelasan:

#mean = (63 + 54 + 62 + 59 + 52) / 5 #

#mean = 58 #

#n = 5 #

63

#x - min = 63 - 58 = 5 #

# (x - min) ^ 2 = 5 ^ 2 = 25 #

54

# x - min = 54 - 58 = -4 #

# (x - min) ^ 2 = (-4) ^ 2 = 16 #

62

#x - min = 62 - 58 = 4 #

# (x - min) ^ 2 = 4 ^ 2 = 16 #

59

#x - min = 59 - 58 = 1 #

# (x - min) ^ 2 = 1 ^ 2 = 1 #

52

# x - min = 52 - 58 = -6 #

# (x - min) ^ 2 = (-6) ^ 2 = 36 #

#Sigma (x - min) ^ 2 = 25 + 16 + 16 + 1 + 36 = 94 #

# sigma ^ 2 = (Sigma (x - min) ^ 2) / n = 94/5 = 18.8 #