Practice Problems 10/08/2023 (Data analysis and python)

Hello there,
Try to answer all questions
All the best….

  1. Describe the concept of a decorator in Python. Provide an example of creating and using a decorator.
  2. What is the primary goal of exploratory data analysis (EDA)?
    a) Building machine learning models
    b) Summarizing data using statistical measures
    c) Cleaning and preprocessing data
    d) Creating data visualizations
  3. In data analysis, what does the term “correlation” refer to?
    a) A statistical measure of the central tendency of a dataset.
    b) The process of removing outliers from a dataset.
    c) A measure of the strength and direction of a linear relationship between two variables.
    d) The process of converting categorical data into numerical values.
  4. Which of the following is NOT a common step in the data preprocessing phase of a data analysis project?
    a) Data cleaning
    b) Exploratory data analysis
    c) Feature engineering
    d) Model training
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