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= (1 x 48) + (2 x 55) + (17 x 62) + (3 x 69) + (10 x 76) + (7 x 83)
40
= 48 + 110 + 1054 + 207 + 760 + 249
40
= 2428
40
= 60,7
MEDIAN
N = 40, 1/2 N = 20
tb = 58,5
F = fk sebelum kelas Me = 3
f = frekuensi kelas Me = 17
c = lebar kelas = 7
Me = tb + (1/2N - F )c
f
Me = 58,5 + (20 - 3)7
17
Me = 58,5 + (17)7
17
Me = 58,5 + 7
Me = 65,5
SIMPANGAN BAKU (s)
s² = 6283,6
40
s² = 157,09
s = 12,53
#maaf kalau salah :D