Publications by Jeffry Wijaya
Assignment5
1 Your Exercise In this section, you are expected to be more confident to create your own function. Here I advise you to create a function for each tasks bellow: Univariate variable (one dimension) average ratarata <-function(a) { (sum(a)/length(a)) } a<-c(1,2,3,4,5,6,7) ratarata(a) ## [1] 4 middle_value titiktengah<-function(b) ...
809 sym R (8734 sym/45 pcs)
R Basics
1 Generate Data frame Suppose you are a data scientist, and you get a project at a start-up company, for instance Kopi Kenangan. Let’s say, you are asking to generate the collection of any possible data set from their daily sales. If I asking you: what kind of data set that you can generate?. Here, I assume you want to provide them the followin...
2648 sym R (1461183 sym/41 pcs) 1 img
R Basics
A. Creating Vectors In this section, you are expected to be able to shape data in vectors, perform basic mathematical operations, and also manipulate vectors. Exercise 1 Create a vector A containing numeric values, starting from the last 2 digits of your student id up to 30. A <- c(16:30) Exercise 2 Create a vector B containing 12 character val...
13568 sym R (9592 sym/55 pcs) 1 img
R Interfaces
1 Introduction In R, we can read data from files stored outside the R environment. We can also write data into files that will be stored and accessed by the operating system. R can read and write into various file formats like csv, excel, txt,rds, xml, json, etc. 2 Working Directory Before we start working with data (interface data), first make ...
4389 sym R (7468 sym/26 pcs) 2 img
Assignment13
Email: je070601@gmail.com RPubs: https://rpubs.com/invokerarts/ Linkedin: https://www.linkedin.com/in/jeffry-wijaya-087a191b5/ Visualisasi Data adalah teknik dalam mengambil informasi dari daya ke dalam konteks visual, seperti bagan, grafik, dan peta. Visualisasi data mungkin untuk membuat big data ,menjadi mudah untuk dimengerti otak manusia,...
25742 sym R (29415 sym/51 pcs) 49 img
Assignment 10
Salah satu kemampuan yang paling dasar untuk seorang Data Scienctist adalah Persiapan Data (Manipulasi Data). Agar menjadi efektif, Anda perlu paham betul dalam melakukan manipulasi data. Ini dikarenakan sebagian besar pekerjaan Anda hanya akan menyangkut mengumpulkan dan membersihkan data. Data Scientist meluangkan 60% waktu mereka untuk member...
12368 sym R (26610 sym/73 pcs) 2 img
Assignment12
Email: je070601@gmail.com Linkedin: https://www.linkedin.com/in/jeffry-wijaya-087a191b5/ RPubs: https://rpubs.com/invokerarts/ 1 Introduction The aim of this report is to apply Exploratory Data Analysis (EDA) to the house sales in King County, Washington State, USA. The data set consisted of historic data of houses sold between May 2014 to May...
1672 sym R (3593 sym/14 pcs) 1 img
UAS
Email: je070601@gmail.com RPubs: https://rpubs.com/invokerarts/ Latar Belakang Andaikan Anda adalah seorang Manajer dibidang projek Data Scince, ingin melakukan analisis perilaku pelanggan menggunakan data transaksi perusahaan ritel online di Inggris (yang memperoleh dataset dalam kurung waktu antara 01/12/2010 dan 09/12/2011). Diketahui dari d...
7945 sym R (41188 sym/75 pcs) 4 img 1 tbl
Week 1 SDB
Email: je070601@gmail.com RPubs: https://rpubs.com/invokerarts/ Linkedin: https://www.linkedin.com/in/jeffry-wijaya-087a191b5/ 1 Buatlah artikel mengenai sejarah perkembangan sistem basis data (dari awal hingga saat ini) 1.1 Zaman Kuno Manusia mulai menyimpan data dari sejak dulu. Di zaman kuno, sistem database yang rumit dikembangkan oleh pe...
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Week 2 Econometrics
Email : je070601@gmail.com Instagram : https://www.instagram.com/marvis.zerex/ RPubs : https://rpubs.com/invokerarts/ Linkedin : https://www.linkedin.com/in/jeffry-wijaya-087a191b5/ Majors : Business Statistics Address : ARA Center, Matana University Tower ...
13132 sym R (6834 sym/55 pcs) 14 img