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Statistics

This repository covers the basics of statistics for beginners of data science student👩‍🎓.

What is Statistics

Learning Objective

At the end of the chapter student should be able to:

  1. State at least one definition of Statistics

  2. Give one example of population parameter and one example of sample statistic.

  3. Be able to classify a variable into quantitative or qualitative, and as nominal, ordinal, interval Or ratio.

Outline

  1. Definition of Statistics

  2. Population parameter and sample statistic

  3. Classifying level of measurement

Definition of statistics

Statistics helps decision making

  1. What is statistics

  2. Individuals and Variables

  3. Examples of Statistics, Individuals and Variables

What is Statistics

Statistics is a branch of applied mathematics that involves the collection, description, analysis, and inference of conclusions from quantitative data.

Statistics is the study and manipulation of data, including ways to gather, review, analyze, and draw conclusions from data.

Statistics is the study of the collection, analysis, interpretation, presentation, and organization of data.

Example: Government Healthcare Department

Government Healthcare Department collects, organizes, analyzes, and interprits numerical information and data

They extract information from the data and make decision about what to include in next year's vaccine

Individuals and Variables

Meaning Outside Statistics Meaning in Statistics 
- Individuals are peaople
  - We expect 50 individuals at graduation

A variable is the factor that can varry, possibly causing a problem.

The time the shop takes with my car is an unknown variable and I can't predict it.