{"id":10355,"date":"2020-02-29T14:53:51","date_gmt":"2020-02-29T07:53:51","guid":{"rendered":"https:\/\/dtmconsulting.vn\/?p=10355"},"modified":"2023-12-14T10:47:06","modified_gmt":"2023-12-14T03:47:06","slug":"data-analysis-la-gi-hoc-phan-tich-du-lieu-voi-ngon-ngu-r","status":"publish","type":"post","link":"https:\/\/dtmconsulting.vn\/en\/data-analysis-la-gi-hoc-phan-tich-du-lieu-voi-ngon-ngu-r\/","title":{"rendered":"Data analysis l\u00e0 g\u00ec? H\u1ecdc ph\u00e2n t\u00edch d\u1eef li\u1ec7u v\u1edbi ng\u00f4n ng\u1eef R"},"content":{"rendered":"

C\u00e1c doanh nghi\u1ec7p ng\u00e0y c\u00e0ng bi\u1ebft coi tr\u1ecdng gi\u00e1 tr\u1ecb c\u1ee7a d\u1eef li\u1ec7u h\u01a1n. Ch\u00ednh v\u00ec v\u1eady, vi\u1ec7c ph\u00e2n t\u00edch d\u1eef li\u1ec7u \u0111\u00e3 tr\u1edf th\u00e0nh nhu c\u1ea7u \u0111\u1ed1i v\u1edbi nhi\u1ec1u doanh nghi\u1ec7p, nh\u1ea5t l\u00e0 c\u00e1c doanh nghi\u1ec7p c\u00f3 c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u1edbn.<\/p>\n

1-Data analysis l\u00e0 g\u00ec?<\/h2>\n

Data analysis is the process of working with data to uncover valuable insights that support business decision-making. This process includes cleaning, transforming, and modeling data.<\/p>\n

\"\"<\/p>\n

Vi\u1ec7c ph\u00e2n t\u00edch d\u1eef li\u1ec7u qu\u00e1 kh\u1ee9 trong doanh nghi\u1ec7p mang l\u1ea1i c\u01a1 h\u1ed9i c\u00f3 \u0111\u01b0\u1ee3c nh\u1eefng quy\u1ebft \u0111\u1ecbnh kinh doanh t\u1ed1t h\u01a1n trong t\u01b0\u01a1ng lai. N\u1ebfu doanh nghi\u1ec7p \u0111ang ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng hi\u1ec7u qu\u1ea3, t\u1ed1c \u0111\u1ed9 ph\u00e1t tri\u1ec3n kh\u00f4ng t\u1ed1t, th\u00ec c\u1ea7n ph\u1ea3i ph\u00e2n t\u00edch d\u1eef li\u1ec7u \u0111\u1ec3 t\u00ecm ra nh\u1eefng sai l\u1ea7m trong qu\u00e1 kh\u1ee9 v\u00e0 kh\u00f4ng l\u1eb7p l\u1ea1i n\u00f3. Ngay c\u1ea3 khi doanh nghi\u1ec7p \u0111ang ho\u1ea1t \u0111\u1ed9ng tr\u01a1n chu, vi\u1ec7c ph\u00e2n t\u00edch d\u1eef li\u1ec7u l\u00e0 quan tr\u1ecdng \u0111\u1ec3 c\u00f3 th\u1ec3 t\u00ecm ra nh\u1eefng c\u01a1 h\u1ed9i kinh doanh m\u1edbi.<\/p>\n

Data analysis can also significantly enhance marketing campaigns by making them more data-driven and effective. Marketing d\u1ef1a tr\u00ean d\u1eef li\u1ec7u<\/a> m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n

1.1. C\u00e1c k\u1ef9 thu\u1eadt ph\u00e2n t\u00edch d\u1eef li\u1ec7u<\/h3>\n

\"\u0110i\u1ec3m<\/p>\n

Text Analysis<\/h4>\n

\u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec3 khai ph\u00e1 m\u1eabu trong d\u1eef li\u1ec7u l\u1edbn b\u1eb1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u ho\u1eb7c c\u00f4ng c\u1ee5 khai th\u00e1c d\u1eef li\u1ec7u. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u th\u00f4 th\u00e0nh c\u00e1c th\u00f4ng tin kinh doanh. C\u00e1c c\u00f4ng c\u1ee5 Business Intelligence c\u00f3 m\u1eb7t tr\u00ean th\u1ecb tr\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u01b0a ra c\u00e1c quy\u1ebft \u0111\u1ecbnh kinh doanh chi\u1ebfn l\u01b0\u1ee3c. Nh\u00ecn chung, n\u00f3 cung c\u1ea5p m\u1ed9t c\u00e1ch \u0111\u1ec3 tr\u00edch xu\u1ea5t v\u00e0 ki\u1ec3m tra d\u1eef li\u1ec7u v\u00e0 c\u00e1c m\u1eabu xu\u1ea5t ph\u00e1t v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 gi\u1ea3i th\u00edch d\u1eef li\u1ec7u.<\/p>\n

Statistical Analysis<\/h4>\n

Ph\u00e2n t\u00edch th\u1ed1ng k\u00ea \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 tr\u1ef1c quan h\u00f3a nh\u1eefng g\u00ec \u0111ang di\u1ec5n ra. Trong \u0111\u00f3 bao g\u1ed3m c\u00e1c c\u00f4ng vi\u1ec7c thu th\u1eadp, ph\u00e2n t\u00edch, gi\u1ea3i th\u00edch v\u00e0 m\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u. Ph\u00e2n t\u00edch th\u1ed1ng k\u00ea g\u1ed3m c\u00f3: ph\u00e2n t\u00edch m\u00f4 t\u1ea3 v\u00e0 ph\u00e2n t\u00edch suy lu\u1eadn.<\/p>\n

Diagnostic Analysis<\/h4>\n

Ph\u00e2n t\u00edch ch\u1ea9n \u0111o\u00e1n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u00ecm ra nguy\u00ean nh\u00e2n th\u00f4ng qua nh\u1eefng c\u00e1i nh\u00ecn c\u1ee7a ph\u00e2n t\u00edch th\u1ed1ng k\u00ea.<\/p>\n

Predictive Analysis<\/h4>\n

Ph\u00e2n t\u00edch d\u1ef1 \u0111o\u00e1n cho th\u1ea5y nh\u1eefng \u0111i\u1ec1u c\u00f3 kh\u1ea3 n\u0103ng x\u1ea3y ra b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c d\u1eef li\u1ec7u t\u1eeb qu\u00e1 kh\u1ee9. \u0110\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a d\u1ef1 \u0111o\u00e1n d\u1ef1a tr\u00ean s\u1ed1 l\u01b0\u1ee3ng th\u00f4ng tin chi ti\u1ebft m\u00e0 b\u1ea1n s\u1edf h\u1eefu.<\/p>\n

Ph\u00e2n t\u00edch \u0111\u1ec1 xu\u1ea5t (Prescriptive Analysis)<\/h4>\n

Ph\u00e2n t\u00edch \u0111\u1ec1 xu\u1ea5t l\u00e0 k\u1ef9 thu\u1eadt s\u1eed d\u1ee5ng k\u1ebft h\u1ee3p th\u00f4ng tin, insight t\u1eeb c\u00e1c ph\u00e2n t\u00edch tr\u01b0\u1edbc \u0111\u00f3 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh h\u00e0nh \u0111\u1ed9ng n\u00e0o c\u1ea7n th\u1ef1c hi\u1ec7n trong m\u1ed9t v\u1ea5n \u0111\u1ec1 ho\u1eb7c quy\u1ebft \u0111\u1ecbnh hi\u1ec7n t\u1ea1i. H\u1ea7u h\u1ebft c\u00e1c c\u00f4ng ty \u0111\u1ecbnh h\u01b0\u1edbng d\u1eef li\u1ec7u \u0111ang s\u1eed d\u1ee5ng ph\u00e2n t\u00edch \u0111\u1ec1 xu\u1ea5t v\u00ec ph\u00e2n t\u00edch d\u1ef1 \u0111o\u00e1n v\u00e0 m\u00f4 t\u1ea3 kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t d\u1eef li\u1ec7u. D\u1ef1a tr\u00ean c\u00e1c t\u00ecnh hu\u1ed1ng v\u00e0 v\u1ea5n \u0111\u1ec1 hi\u1ec7n t\u1ea1i, h\u1ecd ph\u00e2n t\u00edch d\u1eef li\u1ec7u v\u00e0 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh.<\/p>\n

1.2. Quy tr\u00ecnh ph\u00e2n t\u00edch d\u1eef li\u1ec7u<\/h3>\n

Quy tr\u00ecnh ph\u00e2n t\u00edch d\u1eef li\u1ec7u bao g\u1ed3m vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u v\u00e0 x\u1eed l\u00fd ch\u00fang, g\u1ed3m c\u00e1c giai \u0111o\u1ea1n c\u01a1 b\u1ea3n sau:<\/p>\n