Class Notes (808,386)
Canada (493,174)
Statistics (266)
STAC50H3 (1)

Chatpter 1.docx

2 Pages
Unlock Document

University of Toronto Scarborough
Chris Bovaird

Chapter 1- Looking at Data Distributions Introduction : A statistical analysis starts with a set of data. We construct a set of data by first deciding what cases or units we want to study. For each case, we record information about characteristics that we call variables. Definitions: Cases are the objects described by a set of data. Cases may be customers, companies, subject in a study, or other objects. A label is a special variable used in some data sets to distinguish the different cases. A variable is a characteristic of a case. Different cases can have different values for the variables. Categorical and Quantitative Variables A categorical variable places a case into one or several groups or categories. A quantitative variable takes numerical values for which arithmetic operations such as adding and averaging make sense. The distribution of a variable tells us what values it takes and how often it takes these values. 1.1Displaying Distributions with Graphs Exploratory data analysis: statistical tools and ideas help us examine data in order to describe their main features. Two strategies that help us organize our explorati
More Less

Related notes for STAC50H3

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.