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Statistics Vocab - Chapter 1
Data |
Recorded values whether numbers or labels, together with their context |
Data Table |
An arrangement of data in which each row represents a case and each column represents a variable |
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 |
Case |
An individual about whom or which we have data |
Respondent |
Someone who answers or responds to a survey |
Subject/Participant |
A human experimental unit |
Experimental Unit |
An individual in a study for which or for whom data values are recorded. (human experimental units are referred to as subjects or participants) |
Record |
Information about an individual in a database |
Sample |
A subset of a populations examined in hope of learning about the population |
Population |
The entire group of individuals or instances about whom we hope to learn |
Variable |
A variable holds information about the same characteristic for many cases |
Categorical/Qualitative Variable |
A variable that names categories with words or numerals |
Nominal Variable |
The term nominal can be applied to a variable whose values are used only to name categories |
Quantitative Variable |
A variable in which the numbers are values of measured quantities with units |
Units |
A quantity or amount adopted as a standard of measurement such as dollars, hours, or grams etc. |
Identifier Variable |
A categorical variable that records a unique value for each case used to name or identify it |
Ordinal Variable |
The term ordinal can be applied to a variable whose categorical values possess some kind of order |