Textbook Notes (368,330)
Canada (161,803)
Statistics (98)
STAT 101 (27)
Chapter 1

Chapter 1.docx

1 Page
156 Views
Unlock Document

Department
Statistics
Course
STAT 101
Professor
Rick Routledge
Semester
Fall

Description
CHAPTER 1 Individuals – objects described by a set of data  People, animals or things Variable – any characteristic of an individual  Categorical variable – a variable categorized with a number not connected to the data but as a label  Quantitative variable – a variable categorized by units  Usually recorded in a unit of measurement Distribution of a Variable – what values it takes and how often it takes these values  Distribution of a categorical variable – lists the categories and gives either the count or the percent of who falls in each category Pie charts – distribution of a categorical variable as a “pie” whose slices are sized by counts or percents of the categories Bar graph – distribution of a categorical variable as a bar whose height are sized by counts or percents of the categories Histograms – distribution of one quantitative variable  Step 1: Divide the range of data into equal class widths  Step 2: Count individuals in each class 0.1  5.0 = 20 5.1  10.0 = 13  Step 3: Draw histogram 20 Y-axis: Individual X-axis: Quantitative variable 1.0 - 5.0 10 5.1 - 10.0 Bar graphs has spaces in between bars to separate quantities compared, histograms has no spaces in between bars to indicate all values of the variable are covered 0 Interpreting Histograms  Distribution is symmetric – right and left sides are approximately identical  A presence of more than one peak suggests a
More Less

Related notes for STAT 101

Log In


OR

Join OneClass

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

Sign up

Join to view


OR

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.


Submit