Chapter 4: Q. 4.36 (page 173)
Regarding the line that best fits a set of data points,
a. What is that line called?
b. What is the equation of that line called?
a. Regression line.
b. Regression equation.
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13. Identify a use of the coefficient of determination as a descriptive measure.
For each exercise, determine the linear correlation coefficient by using
a. Definirina on page ,
b. Formula on page .
Compare year annex an para (a) and (b
In the article "Comparison of Fiber Counting by TV Screen and Eyepieces of Phase Contrast Microscopy" (Amer. icon Industrial Hyeiene Asseciution Journal, Vol. 63, Pp. 756-761), 1. Moa et al. reported on determining fiber density by two different methods. Twenty samples of varying fiber density were each counted by 10 viewers by means of an eyepiece method and a television screen method to determine the relationship between the counts done by each method. The results, in fibers per square millimeter, are presented on the Weiss Stats site.
(a). Decide whether use of the linear correlation coefficient as a descriptive measure for the data is appropriate, If so, then also parts and.
9. Based on the least-squares criterion, the line that best fits a set of data points is the one with the ________possible sum of squared errors.
(a) Plot the data points and the first linear equation on one graph and the data points and the second linear equation on another.
(b) Construct tables for
(c) Determine which line fits the data points better according to the least-square criterion.
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