IME 254
Engineering Probability and
Statistics I
Introduction to Statistics:
The Science of Data
Introduction
What is statistics?
The science of collecting, classifying
describing, analyzing, and interpreting data
Why use statistics?
To summarize, desc

2 Branches of statistics= descriptive and inferential
Descriptive=organize, summarize, describe, and explore data sets
Inferential= infer about characteristics of large data using sample sets
Statistical definitions=
Statistical population=a data set that

IME 254
Engineering Probability and
Statistics I
Probability
Role of Probability in Statistics
A sample rarely tells a perfect story about
the population
Making inferences based on sample data is
subject to uncertainty
How do we measure the uncertainty
as

IME 254
Engineering Probability and
Statistics I
Descriptive Statistics
Descriptive Statistics
Once data has been collected, descriptive
methods can be used to organize,
summarize and describe the data set
The proper method used to represent the
results d