Introducation to Stats for the Data Scince

What is Stats ?

Stats is the scince of better orgnising and analysing the data.

Why we are using the stats ?

For the better duscion making .

Now, we know that the what is stats and why is used. But it has two different Types such as.

• Discreptive { Organising, Summarizing}
• Infrancial {Conclusion on the data we have }

What is data ?

It is fact of informetion that can be measured . it can be any.

age = { 1,2,3,4,5,6,6,7,8 } 
age is variable .
and inside the curly braces is the data.

What is variable ?

A variable is the contanier which can holds the data . Or we can say variable is property which can take any property.

Now we will deeply look inside the Discreptive stats. Inside this we want to know about the more folowing.

1. Populetion (N)
2. Samples (n)

There are so many ways for taking the samples.

• Random .
• Stratified / Layered / Strata .
• Systmatic .
• Conviniant .

Variables

• Quantitive Variable (That can be measured numrical ,Ages)

• Qualitetevive / Cato gorial variable (color's , IQ)

• Quantitetevie variable has 2 types :

• Discreat (Whole no, a/c no)

• Continious (Float, hight)