Study Note/Data Analysis10 Exploratory Data Analysis (EDA) Exploratory Data Analysis (EDA) is a crucial phase in data analysis that helps in understanding the main characteristics and patterns of the data. EDA forms the foundation of data analysis by providing insights into the structure of the data and identifying potential issues or anomalies. Key Elements of EDAData UnderstandingUnderstand the source, collection method, structure, and meaning of each.. 2024. 5. 28. The Pearson correlation coefficient The Pearson correlation coefficient is a statistical method used to measure the linear relationship between two variables. It typically describes how two variables move together. The Pearson correlation coefficient ranges from -1 to 1, and it is interpreted as follows:- Close to 1: Indicates a strong positive linear relationship between the two variables. As one variable increases, the other var.. 2024. 5. 13. Data preprocessing Data preprocessing refers to the process of cleaning, transforming, and preparing data before it is analyzed. This process involves improving the quality of the data and transforming it into a suitable format for analysis, thereby enhancing the performance of analytical models. The main tasks involved in data preprocessing include:1. Data Cleaning: This involves removing noise from the data, suc.. 2024. 5. 10. What is Data Analyst? What is Data Analyst?A data analyst is a professional who primarily collects and analyzes data to derive useful information and insights.They typically perform the following tasks:1. Data Collection: They gather data from various sources and store it in databases or data warehouses.2. Data Preprocessing: They refine and standardize collected data to prepare it for analysis, including data cleani.. 2024. 5. 9. Mece logic tree MECE(Logical) stands for 'Mutually Exclusive, Collectively Exhaustive,' representing a principle of clear and systematic categorization in problem-solving and analysis. It is a guiding principle widely applied in various fields, particularly in management consulting and data analysis.MECE Logit Tree is a methodology used in predictive or classification modeling, where data is analyzed and specif.. 2024. 4. 29. AARRR Funnel Analysis AARRR is a model used in digital marketing and product management to analyze and optimize the customer lifecycle. The AARRR model, shaped like a funnel narrowing downwards, aims to reduce customer running out rates as you move down the funnel. AARRR stands for:Acquisition: This stage focuses on acquiring new users or customers. It involves activities such as driving traffic.. 2024. 4. 24. 이전 1 2 다음
