Chapters 2,3,&4 Flashcards
Data
Systematically recorded information, whether numbers or labels, together with it’s context
Context
The context ideally tells Who was measured, What was measured, How the data were collected, Where the data were collected and When and Why the study was performed
Data table
An arrangement of data in which each row represents a case and each column represents a variable
Case
Individual about whom or which we have data
Variable
Holds info about the same characteristic for many cases
Categorical variable
Names categories (whether with words or numerals)
Quantitative variable
The numbers act as a numerical value- always have units
Unit
Quantity or amount adopted as a standard of measurement
Frequency table
Lists the categories in a categorical variable and gives the count or percentage
Distribution
Gives possible values of variable and the relative frequency of each value
Area principle
Each data value should be represented by the same amount of area
Bar chart
Show bars representing the count in each category in a categorical variable
Pie chart
Shows how a “whole” divides into categories
Contingency table
Displays counts and percentages of individuals into categories on 2 or more variables
Marginal distribution
The distribution of either variable alone- the totals found in the “margins” of the table
