Statistics Notes
,1|Page
Statistic
Statistics is a branch of mathematics , which
dealings with data collection, organization,
analysis, Transform data to Present information.
It is a Game of Numeric Analysis.
,2|Page
Why We Study statistics
1. Because numeric information is available every where
2. To get knowledge of statistical methods for making
successful decision.
3. To take decision Correct & Wrong
What is Meant by Statistics?
Collection of numerical Information
1. Statistic consist of a body of methods for collecting & Analyzing
Data.
Types of Statistic
1. Descriptive statistics methods for organizing, summarizing,
presenting data in an informative way
Descriptive statistics involves summarizing and organizing
the data so they can be easily understood.
2. Inferential statistics (Infer, To Tell)
The Method used to guess a property of a population on
basis of a sample.
Example:
Population Sample
2K18 Dhani Bakhsh
, 3|Page
Population
In simple terms, population means the collection of all
elements.
Sample
A part of the population is called a sample.
Types of Variables
Variable = Changeable
Static = constant
Quantitative
The characteristics expressed in numeric form is Called
Quantitative.
Example:-
Height, weight , Marks or Garde
A country's population,
a person's shoe size,
Student Grade etc
,1|Page
Statistic
Statistics is a branch of mathematics , which
dealings with data collection, organization,
analysis, Transform data to Present information.
It is a Game of Numeric Analysis.
,2|Page
Why We Study statistics
1. Because numeric information is available every where
2. To get knowledge of statistical methods for making
successful decision.
3. To take decision Correct & Wrong
What is Meant by Statistics?
Collection of numerical Information
1. Statistic consist of a body of methods for collecting & Analyzing
Data.
Types of Statistic
1. Descriptive statistics methods for organizing, summarizing,
presenting data in an informative way
Descriptive statistics involves summarizing and organizing
the data so they can be easily understood.
2. Inferential statistics (Infer, To Tell)
The Method used to guess a property of a population on
basis of a sample.
Example:
Population Sample
2K18 Dhani Bakhsh
, 3|Page
Population
In simple terms, population means the collection of all
elements.
Sample
A part of the population is called a sample.
Types of Variables
Variable = Changeable
Static = constant
Quantitative
The characteristics expressed in numeric form is Called
Quantitative.
Example:-
Height, weight , Marks or Garde
A country's population,
a person's shoe size,
Student Grade etc
