Bagi yang belum berkenalan dengan R, silakan berkenalan
dulu di sini. Secara ringkas,
R ini adalah salah satu software olah data open
source. Meskipun gratis, R cukup powerful dan berkembang cukup pesat di
kalangan pegiat olad data. Beberapa ahli masih terus bergotong-royong mengembangkan
package dalam R hingga saat ini. Meskipun demikian, R mungkin masih nampak asing
bagi kita yang sudah terbiasa dengan SPSS karena bahasa yang digunakan lebih
banyak menggunakan bahasa pemrograman, tidak seperti SPSS yang tinggal klik. Namun,
tenang saja, banyak script R ini tersebar di internet, jadi kita tidak perlu
lagi membuat sendiri, tinggal cari saja di google apa kebutuhan kita.
Karena bahasa yang masih tidak umum di kalangan peneliti,
banyak yang memilih menyerah dan tetap menggunakan software berbayar, meskipun
tidak memiliki lisensi. Namun bagi kalian yang sudah insaf dan tertarik
mempelajari R lebih dalam, ada satu website yang menyediakan pelatihan R secara
gratis, ya tidak full gratis sih, tapi cukup lah jika untuk mencicipi bagaimana
menggunakan R. Wbsite ini bernama DataCamp yang bisa diakses di https://www.datacamp.com/home. Kita cukup
regristrasi dengan email atau Facebook, dan sudah bisa belajar menkoding di
situ. Selain R, DataCamp juga menyediakan pelatihan Python, alat oleh data
juga, namun saya sendiri belum pernah mencoba. Jadi daripada mengikuti
pelatihan yang berharga jutaan untuk sekedar icip-icip, mengikuti pelatihan di
website ini menjadi alternatif yang lebih murah dan fleksibel secara waktu.
Apa keistimewaan
DataCamp?
Di DataCamp ada banyak sekali course, mulai dari yang
paling dasar hingga yang sudah expert. Khusus course level dasar, DataCamp
memberikannya secara gratis, namun untuk level yang lebih tinggi, hanya
beberapa bagian saja yang terbuka secara gratis. Kenapa belajar di DataCamp ini
saya rekomendasikan? Ini beberapa alasannya:
1.
Sistem belajar yang learning
by doing
Jadi setiap
materi akan ada petunjuk, disertai dengan soal yang kita langsung kerjakan di
situ juga. Soal disini tentu saja adalah soal coding yang digunakan di R. Akan ada
tampilan yang mirip seperti di software R, yakni ada tempat untuk menulis
script dan console yang menampilkan output. Kita diminta untuk menjawab soal
dengan menulis script disitu, lalu kita run. Kalau script kita benar, maka kita
akan mendapakan point dan bisa lanjut ke level selanjutnya. Namun kalau script
kita salah, kita bisa minta petunjuk sampai kita bisa menuliskan script yang
benar. Jadi asyik kan, seperti main game saja.
2.
Materi yang lengkap
Materi course
yang ada di DataCamp sangat lengkap dan up-to-date. Meskipun kegunaan utama
materi lebih dikhususkan untuk para data scientist, namun tidak menutup
kemungkinan ahli psikometri dan statistika untuk memanfaatkan pelajaran di
sini.
3.
Fleksibel dalam mengatur waktu belajar
Karena tidak ada
jadwal khusus, kita bisa menyesuaikan belajar kita dengan kesibukan kita. Kita juga
bisa menyesuaikan kecepatan belajar kita sesuai kemampuan kita. Tidak seperti
belajar di kelas, yang jika kita belum paham sementara materi harus terus
berlanjut, kita akan ditinggal. Di DataCamp kita bisa mengulang materi berapa kalipun
kita mau sampai paham.
4.
Memperoleh sertifikat
Jika kita memang
serius untuk belajar, kita bisa membayar untuk belajar di situ, biayanya
25USD/bulan atau sekitar 350.000 rupiah/bulan. Keistimewaannya adalah kita bisa
memperoleh full course dan mendapatkan sertifikat jika sudah menyelesaikan satu
course.
Ya memang kita tidak akan bisa belajar full tentang R di
DataCamp. Untuk belajar menjadi ahli R memang andalannya adalah Google dan jam terbang. Tapi setidaknya untuk icip-icip dan memberikan insight tentang
bagaimana program R bekerja belajar di DataCamp ini cukup membantu. Metode belajar yang learning by
doing dan seperti main game juga menjadikan belajar di sini menjadi
menyenangkan. Kita seperti diajak memecahkan teka-teki dan jika bisa
memecahkannya, kita bisa lanjut level. Untuk mulai belajar R di DataCamp,
silakan meluncur ke https://www.datacamp.com/courses/free-introduction-to-r,
atau bisa juga ke https://campus.datacamp.com/courses/belajar-r/pengenalan-dasar?ex=1,
untuk course yang sudah diterjemahkan oleh Herman Tan ke bahasa Indonesia.
Namun course dalam bahasa Indonesia ini masih sedikit.
34 komentar
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