The article Readability of Liquid Crystal Displays: A Response Surface (Human Factors [1983]: 185190) used an estimated
Question:
The article “Readability of Liquid Crystal Displays: A Response Surface” (Human Factors [1983]: 185–190) used an estimated regression equation to describe the relationship between y = error percentage for subjects reading a four-digit liquid crystal display and the independent variables x1 = level of backlight, x2 = character subtense, x3 = viewing angle, and x4 = level of ambient light. From a table given in the article, SSRegr = 19.2, SSResid = 20.0, and n = 30.
a. Does the estimated regression equation specify a useful relationship between y and the independent variables? Use the model utility test with a .05 significance level.
b. Calculate R2 and se for this model. Interpret these values.
Step by Step Answer:
Statistics The Exploration & Analysis Of Data
ISBN: 9780840058010
7th Edition
Authors: Roxy Peck, Jay L. Devore