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Minggu depan ke Sulawesi Selatan. Maju Terus.
Berbeda dengan Statistical Tools yang telah banyak diketahui orang NAMUN Statistical Thinking masih belum diketahui banyak orang bahkan mungkin oleh seorang lulusan jurusan Statistika Terapan sekalipun. Seseorang yang memahami Statistical Thinking, maka ketika dia memperoleh data akan dilihat dahulu bagaimana variasi yang terjadi dalam proses itu BUKAN langsung memikirkan tentang apa Statistical Tools yang akan dipergunakan. Setelah memahami Variasi yang terjadi dalam proses melalui data yang dikumpulkan itu baru orang yang memahami Statistical Thinking itu mendesain model pengendalian proses agar proses itu stabil dan memiliki kapabilitas memenuhi ekspektasi pelanggan. Yang paling dibutuhkan oleh professional managers adalah Statistical Thinking BUKAN Statistical Tools.
Variasi adalah ketidakseragaman dalam sistem atau output akhir sehingga menimbulkan perbedaan dalam kualitas pada output (produk dan/atau jasa) yang sama.
Pada dasarnya dikenal ada dua sumber atau penyebab timbulnya variasi, yaitu:
- Penyebab Khusus (Special Causes) adalah kejadian-kejadian di luar sistem yang mempengaruhi variasi dalam sistem. Penyebab khusus dapat bersumber dari faktor-faktor: manusia, peralatan, material, lingkungan, metode kerja, dll. Penyebab khusus ini dapat diidentifikasi/ditemukan, sebab mereka tidak selalu aktif dalam proses tetapi memiliki pengaruh yang lebih kuat pada proses sehingga menimbulkan variasi.
- Penyebab Umum (Common Causes) adalah faktor-faktor di dalam sistem atau yang melekat pada operasi yang menyebabkan timbulnya variasi dalam sistem serta hasil-hasilnya. Penyebab umum sering disebut juga sebagai penyebab acak (random causes) atau penyebab sistem (system causes).
Model sistem pengendalian proses dalam industri apa saja yang sering dipergunakan oleh saya adalah seperti tampak dalam bagan terlampir.
Berdasarkan data yang dikeluarkan kementerian perhubungan RI, antara bulan Juli – Desember 2015 OTP (On Time Performance) dari Batik Air paling tinggi yaitu: 91,21%, kemudian NAM Air (90,61%) dan Garuda Indonesia (85,82%). Kesimpulan Batik Air dan Garuda Indonesia memang bersaing ketat dalam hal OTP, NAMUN harga tiket Batik Air lebih murah daripada Garuda Indonesia.
http://www.money.id/news/kemenhub-rilis-maskapai-paling-on-time-dan-delay-di-2015-160202j.html
Salam SUCCESS.
Using The Company’s Helicopter Facility for Socialization of Management System in Bandung
Next week heading out to South Sulawesi. Moving on.
Different from Statistical Tools which has been widely known, HOWEVER Statistical Thinking is still not widely known even perhaps by a graduate majoring in Applied Statistics. Someone who understands Statistical Thinking, then when he obtains data, he will look first on how variations occur within that process, NOT immediately think about which Statistical Tools that will be used. After understanding the Variations occuring within the process using those collected data, then that person who understands Statistical Thinking, would design process control model in order for that process to be stable and to have capabilities to meet customer expectations. What is most needed by professional managers is Statistical Thinking, NOT Statistical Tools.
Variation is non-uniformity in system or final output that inflict difference in quality on the same output (product and/or service).
Basically it is known there are two sources or causes of the emerging variation, which are:
- Special Causes: are events outside the system that affect variations in the system. Special causes can be sourced from factors such as: human, equipment, material, environment, working method, etc. These special causes can be identified/found since they are not always active in process; but they still have stronger influence in the process so that to cause variations.
- Common Causes: are factors within the system or that are attached to the operation that cause the emerging variations within the system as well as their effects. Common causes are often also referred to as random causes or system causes.
Process control model system in any industry that is often used by me is as shown in the attached chart.
Based on the data published by RI Ministry of Transportation, between the months of July – December, 2015, OTP (On Time Performance) of Batik Air was the highest at: 91,21%, followed by NAM Air (90,61%) and Garuda Indonesia (85,82%). In conclusion, Batik Air and Garuda Indonesia were indeed competing in OTP; HOWEVER, Batik Air’s ticket price is cheaper than Garuda Indonesia’s.
http://www.money.id/news/kemenhub-rilis-maskapai-paling-on-time-dan-delay-di-2015-160202j.html
Best Regards for SUCCESS.
