LU4: Data Science

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What is data science?

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Data science is the art and science of acquiring knowledge through data.

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What are the five steps of the data science process?

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1. Formulate a question that you need an answer for; 2. Collect data; 3. Explore the collected data; 4. Create a model using the collected data; 5. Create a visual representation of the results.

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What is the first step in the data science process?

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Formulate a question that you need an answer for.

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What types of data sources are there in data collection?

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Primary data and secondary data.

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What is primary data?

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Primary data is collected specifically to answer the question.

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What is secondary data?

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Secondary data is data that was already collected that can be used for analysis.

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What is exploratory data analysis (EDA)?

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EDA is used by data scientists to analyze and investigate data sets and summarize their main characteristics, often employing data visualization methods.

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What is the purpose of creating a model in the data science process?

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To use machine learning and statistical techniques to answer the original question.

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What is the last step in the data science process?

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Create a visual representation of the results.

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What skills are required to be a data scientist?

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Computer science, statistics, and business knowledge.