data_understanding.ipynb

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    "\n",
    "# Data understanding\n",
    "## 1. Initial Data Report\n",
    "In this phase you start by listing:\n",
    "- Data sources acquired with their locations\n",
    "- The methods used to acquire them\n",
    "- Any problems encountered\n",
    "## 2. Data Description\n",
    "- Overview of the dataset \n",
    "- Format\n",
    "- Quantity\n",
    "- Whether or not it satisfied the requirements\n",
    "## 3. Data Quality\n",
    "### 3.1 Questions\n",
    "- Is the data complete?\n",
    "- Is it correct, or does it contain errors and, if there are errors, how common are they?\n",
    "- Are there missing values in the data? If so, how are they represented, where do they occur, and how common are they?\n",
    "### 3.2 Outliers and missing values\n",
    "- Describe whether there are missing values and outliers\n",
    "- The method you're going to use to deal with each of them\n",
    "\n",
    "## 4. Data Exploration\n",
    "- Distribution of key attributes (for example, the target attribute of a prediction task)\n",
    "- Relationships between pairs or small numbers of attributes\n",
    "- Results of simple aggregations\n",
    "- Properties of significant sub-populations\n",
    "- Simple statistical analyses"
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