Satu soal doang pliss jangan bercanda ya

Satu soal doang pliss jangan bercanda ya

Jawab:

data :

7, 5, 9, 7, 6, 5, 9, 6, p

Banyak data = 9

rata X = 7

7(9) = 7 + 5+ 9+ 7+ 6 + 5+ 9+ 6 + p

63 = 54 +p

p = 63 – 54

p = 9

simpangan baku= s

$rm S^2 = sum dfrac{(x_i - vec x)^2}{n}$

S² = 1/9 { (7-7)²+ (7-5)²+ (9-7)²+(7-7)²+ (7-6)²+ (7-5)²+ (9-7)²+ (7-6)²+ (9-7)²}

S² = 1/9 ( 0 + 4+ 4+ 0 + 1 + 4+ 4+1+ 4}

S² = 1/9 (22)

s² = 22/9

s = √(22/9)

s= 1,56