Marketing Scales. Reliability Analysis: Statnotes, from North Carolina State University. This content is now available from Statistical Associates Publishers.
Click here. Below is the overview and table of contents in unformatted form. Overview Researchers must demonstrate instruments are reliable since without reliability, research results using the instrument are not replicable, and replicability is fundamental to the scientific method. Reliability is the correlation of an item, scale, or instrument with a hypothetical one which truly measures what it is supposed to.