Earl Babbie defines variable.

Professor Earl Babbie defines a variable as a logical set of attributes conceptualized in a way that it includes all possible attributes. For the variable "gender," attributes would include male and female, but should not be limited to those.

Bibliographic Details
Corporate Author: Sage Publications
Format: Video
Language:English
Language Notes:Closed-captioned in English.
Published: London : SAGE Publications Ltd, 2017.
Subjects:
Online Access:Connect to this streaming video
Description
Summary:Professor Earl Babbie defines a variable as a logical set of attributes conceptualized in a way that it includes all possible attributes. For the variable "gender," attributes would include male and female, but should not be limited to those.
Physical Description:1 online resource (1 video file (1 min., 16 sec.)) : sound, colour
ISBN:9781473999671 (streaming video) :