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Data cleaning: Difference between revisions
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* Data modeling: [[Data type]] | * Data modeling: [[Data type]] | ||
* [http://www.icpsr.umich.edu/icpsrweb/NAHDAP/support/faqs/2006/01/what-is-codebook What is a codebook?] | * [http://www.icpsr.umich.edu/icpsrweb/NAHDAP/support/faqs/2006/01/what-is-codebook What is a codebook?] | ||
* [https://www.facebook.com/groups/1210634969026548/permalink/1540468379376537/ 台灣R軟體Club] 「由於真實社會的資料千奇百怪，遺失值、空字串、空格、甚至是假的 "NA" (NA兩邊多了雙引號)、假的"NULL" (NULL兩邊多了雙引號) 。。。，其中一個顯著的差異是，社會實務應用的 R 程式中，通常會多出一堆檢查機制。 ... ...」{{access | date = 2017-12-18}} | |||
== references == | == references == | ||