Data Analysis. Data Management

What is Data Analysis?

• Data Analysis is the process of systematically applying statistical and/or logical techniques to describe and illustrate, condense and recap, and evaluate data.

• Analyze Data empowers you to understand your data through natural language queries that allow you to ask questions about your data without having to write complicated formulas

5 basic steps of Data Analysis

• Identification, Collection, Clearing, Separation, Scaling

• Identification, Analysis, Cooperation,

  Scaling, Separation

• Paraphrasing, Editor, Scaling, Identification, Analysis

• Identification, Collection, Clearing

  Analysis, Interpretation

What is the correct order?

• Analyze, Identify, Clean, Collect, Interpret

• Identify, Collect, Clean, Analyze, Interpret

• Identify, Interpret, Analyze, Collect, Clean

• Clean, Collect, Identify, Interpret, Analyze

Decision Tree is...

• The goal is to create a model that predicts the value of a target variable by learning simple decision rules inferred from the data features

• The practice of collecting, keeping, and using data securely, efficiently, and cost-effectively.

Data preparation is used.....

• documents the flow of data through

• provides a formal approach for creating

• To clean and transform raw data into the right shape

• to help manage metadata

Data management can increase the visibility of your organization’s data assets, making it easier for people to quickly and confidently find the right data for their analysis.

• Visibility

• Flexibility

• Security

• Scalability

Big data refers to information whose volume can be more than?

• thousand terabytes

• 20 megabytes

• hundred terabytes or petabytes

• 40 megabytes

What format and how are created?

• Velocity, Variety

• Volume,Velocity,Variety

• Different format

What is the best programming language for data science?

• C/C++

• R

• 3Python and R.4

(..............) is a multipurpose programming language that is compact and easy to read

• Python

• JULIA

• JAVA

• R