Lecture 1

# Lecture 1 - What is Statistics? Statistics is the science...

This preview shows pages 1–4. Sign up to view the full content.

What is Statistics? Statistics is the science of collecting, describing, and interpreting data. Two Areas of Statistics Descriptive Statistics: utilizes numerical and graphical methods to look for patterns, to summarize, and to present the information in sample data Ex: Inferential Statistics: utilizes sample data to make estimates, decisions, predictions, or other generalizations about a population. Ex:

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
INTRODUCTION TO BASIC TERMS Population: A collection, or set, of individuals or objects or events whose properties are to be analyzed. Ex: Sample : A subset of the population Ex: Variable : A characteristic about each individual element of a population or sample Ex:     Data  (singular):   The value of the variable  associated with one unit of a population or sample.  The value may be a number (ex. temperature), word  (ex. rain), or a symbol.
Data  (plural):   The set of values collected for the  variable from each of the elements belonging to the

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 02/15/2009 for the course STAT 2004 taught by Professor Melutz during the Fall '07 term at Virginia Tech.

### Page1 / 17

Lecture 1 - What is Statistics? Statistics is the science...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online