Catatan Riki Akbar

 Oke, tulisan ini memang telat sebulan. Saya baru sadar pada tanggal 9 Agustus 2010 yang lalu adalah hari pertama blog ini diluncurkan dengan signature   opening para programmer: the Hello World opening . Hello World  jugalah yang menjadi judul dari   post pertama saya. So, it's been 10 years. Isi dari blog ini sebagian besar bertipe karangan bebas dan sebagian besar dari karangan bebas tersebut berbentuk puisi. Tapi, tidak melulu puisi. Banyak juga post  yang diproduksi sebagai kritik bahkan autokritik. Tapi belakangan, kehidupan pasca menikah menjadi sumber inspirasi saya untuk mengisi blog ini. Circa  2017, blog ini sempat berganti alamat untuk beberapa saat ke domain rikiakbar.com. Tapi, kemudian saya menjadi cukup malas untuk melakukan maintenance   hosting  dan domain nya sehingga sampailah pada keputusan untuk mengembalikan blog ini ke rumah lamanya di blogger sambil mengembalikan fungsi awal dari blog ini yakni jurnal dan dokumentasi...

A data distribution (commonly presented using histogram) can be analyzed by utilizing these components S HAPE: Bell-shaped, Left-skewed, Right-skewed, etc. C ENTER: Mean and Median S PREAD: Maximum & Minimum value, Quartile, Interquartile range O UTLIERS: Analyze the existence of outliers. Visit this  to find out how to determine outliers . The relationship between mean and median on different shapes of data distribution typically can be considered as follows: Bell-shaped: Mean = Median Left-skewed: Mean < Median Right-skewed: Mean > Median The Five Numbers defines five statistical measures to obtain a dataset profile/summary so that the center and the spread of the dataset can be identified. The Five Numbers are: Min/Minimum Q1/First Quartile Median. Also known as Q2/Second Quartile Q3/Third Quartile Max/Maximum Occasionally, The Five Numbers are complemented by Standard Deviation and Interquartile Range to produce a more comprehensive preview of the dataset. Standard De...

So, I decided to read again after a long time It's not long before I turned my wife's computer on and started drowning myself in Amazon. Found one or two or three books that caught my attention but no further action was taken as they were extremely expensive (This was my first time looking for a book from a foreign online service and I was a little tight on my budget). I didn't expect that the shipping cost could be very influential in deciding which book to buy. Not to mention, the import tax imposed on foreign book purchase was not something I had anticipated earlier. That said, it didn't stop me from drowning myself deeper in the ocean of virtual bookstores. *** Phase One: The Purchase Story From the very beginning, I was not interested in searching for any recreational book. So, there would be no novels, fiction, comics, or even cooking books in my shopping cart.  At that moment, I was quite into data-related topics and therefore, data-related books are something I ...