27. 출처
포 브 스 전 처 리 - https://www.forbes.com/sites/gilpress/2016/03/23/data-preparation-most-time-
consuming-least-enjoyable-data-science-task-survey-says/#6827879d6f63
엑셀 vs 파이썬- https://www.gapintelligence.com/blog/a-look-at-python-versus-excel/
엑셀 vs 파이썬 table - https://www.nobledesktop.com/learn/python/python-vs-excel
엑셀 시각화 - https://www.tutorialspoint.com/excel_data_analysis/excel_data_analysis_visualization.htm
경영학과 아동학과 여성 비율 - https://blog.naver.com/gracestock_1/120200076090
데이터 분석 과정 - https://www.123rf.com/photo_100511312_stock-vector-data-mining-four-stage-
process-infographic-big-data-analysis-design-.html