Home » economic » Standard Deviasi – Statistik

Standard Deviasi – Statistik

Kalau ditanya mata pelajaran apa yang bikin kepala pusing, salah satunya akan disebut : Statistik. Hitung-hitungannya panjang, rumusnya banyak ditambah lagi kemungkinan adanya kesalahan pada saat melakukan perhitungan.

Jadi lengkap sudah. Barangkali kondisi ini yang membuat orang malas untuk belajar Statistik.

File:Standard deviation diagram.svgNote: Dark blue is one standard deviation on either side of the mean. For the normal distribution, this accounts for 68.27 percent of the set; while two standard deviations from the mean (medium and dark blue) account for 95.45 percent; three standard deviations (light, medium, and dark blue) account for 99.73 percent; and four standard deviations account for 99.994 percent. The two points of the curve that are one standard deviation from the mean are also the inflection points.

Berikut sample link ke website yang memuat salah satu bagian Statistik, materi tentang Standard Deviasi yang membantu memperjelas cara memahami perhitungannya. Mudah-mudahan bisa memberikan manfaat.

1. http://www.ltcconline.net/greenl/courses/201/descstat/mean.htm

2. http://en.wikipedia.org/wiki/Standard_deviation

eof.


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