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WHAT IS DATA SCIENCE?
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Data science is the area of study Data, and it’s using solve problems. Data science is a concept of statistics, machine learning and deep learning and their related methods to understand and analyse Data.
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In which involves:

- collecting
- Storing
- Processing
- Describing
- Modelling.

The goal of data science is to gain insights and knowledge from a type of data – like both Structure & Unstructured Data.

**• Collecting Data**

Data collection is the process of gathering and measuring the variables of interest, its depends up on the environment & Questions for the Data scientist.

**• Storing Data:**

Data storing is referring to storing of useful data which we use in data analysis and process to dig the actionable insights out of it.

Data storing like: - Transactional & Operational Data.

(Transactional Data is describing the business events of the organization.)

(Operational Data is used to manage the information and technology assets of the organization.) - Data from multiple Database.
- Unstructured Data.

(unstructured Data like Text, image, video and speech)

**• Processing Data:**

Its known as Data wrangling or Data Munging.

It is used for ETL process (ETL—Extract, Transform & Load)

In this Data Processing include (Data Cleaning, Data Scaling, Data normalizing, Data Standardising).

**• Describing Data:**

It is visualizing and summarising the Data.

Visualizing Data:

To Visual all the Data using Graph.

Summarising Data:

To summarise each data, based on the recorded.

(like mean, median, mode)

**• Modelling Data:**

Data modelling is the analysis of data objects and their relationship to other data objects, based on the Statistical Modelling and Algorithmic.

*In Statistical modelling involves:*

- Linear Regression
- Logistic Regression
- Linear Discriminant Analysis.

*Algorithmic Modelling involves:* - Linear Regression
- Logistic Regression
- Linear Discriminant
- Decision Tree
- K-NNs
- SVM
- Naive Bayes.

**Common Skills needed for Data Scientist:**

**• Domain Knowledge**

**• Maths & Statistics**

**• Hacking Skills.**