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Joseph Njoroge Kariuki
Joseph Njoroge Kariuki

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Data Science for Beginners: 2023 - 2024 Complete Roadmap

Introduction
Data Science is a field that combines various techniques, processes, systems and algorithms to gain and extract meaningful insights and knowledge from data.
Data Science is a multi disciplinary field and combines knowledge from the fields of mathematics, statistics, artificial intelligence, and computer science to analyze large amounts of data.

elements of Data Science
The key elements of data science that should be known by every data scientist includes:

1.Data Collection:
Data is one of the most crucial components in a data science project. It exists in many locations and forms either as structured or unstructured. This makes data collection a crucial step in a data science project.
Sources of data may include databases, spreadsheets, websites and online platforms like Kaggle.

  1. Data Cleaning and processing:
    The collected data is not always clean and as per the saying "Garbage in garbage out", so efforts must be made to ensure that data is correct, accurate and complete. Uncleaned data may result into misleading results which could cause critical harm to an organization.
    Data cleaning process include handling outliers, dealing with missing values, removing duplicates, addressing bias and transforming data into usable format

  2. Exploratory Data Analysis:
    This is a process that involves examining and visualizing data to discover patterns, trends, and relationships. This step helps in gaining a deeper understanding of the dataset

  3. Data Visualization:
    Data visualization involves creating visual representation of data to convey insights in a compelling and understandable manner.
    There are several tools suitable for data visualization including Power BI, QlickSense, Tableu, matplotlib and seaborn libraries of Python and R's ggplot library among others

  4. Machine learning:
    Machine learning involves using algorithms and models to train a system to recognize patterns, make decisions, or predict outcomes based on historical data.

  5. Statistical Analysis:
    It involves applying statistical methods to draw inferences, make predictions, and validate hypotheses about the data.

7.Natural Language Processing (NLP):
NLP involves prrocessing and analyzing human language data, enabling tasks like sentiment analysis, language translation, and chatbots.

8.Domain Expertise:
Understanding the specific context and domain to better interpret results and make informed decisions.

Conclusion
Hopefully, this article provided a great introduction in the world of data science. As an aspiring data scientist you should possess basic mathematical and statistical knowledge, knowledge of one programming language like python or R and have domain expertise.

Data Science is a fast growing field in this modern era, so data science skills are worth having

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