This is a glossary of the book.

P

primary data 

Original data that have been collected specially for the purpose in mind.

population 

Entire group being considered for data collection, that we want to draw conclusions about. EX: The population of the United States

R

Random variable

A function that associates a specific and unique numerical value with each outcome of an experiment. (EX: X or Y) The outcome is denoted as lower case

S

sample 

a group of units taken from a larger group (the population). Used to draw conclusions of the larger group. EX: 30 people in a town in the US.

secondary data 

Data that have been collected for another purpose and where we will use Statistical Method with the Primary Data.

statistic 

A measure that is calculated from a sample of data.

Statistical Independence 

They do not affect each other

Z