Chapter 4: Q.4.122 (page 189)
A value of close to ------- indicates that there is either no linear relationship between the variables or a weak one.
A value of close to indicates that there is either no linear relationship between the variables or a weak one.
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In Exercise 4.12, we give linear equations. For each equation,
a. find the -intercept and slope.
b. determine whether the line slopes upward, slopes downward, or is horizontal, without graphing the equation.
c. use two points to graph the equation.
Given equation is,
4.85 A measure of the amount of variation in the observed values of the response variable explained by the regression is the-----. The mathematical abbreviation for it is----.
In Exercise 4.5, we give linear equations. For each equation,
a. find the -intercept and slope.
b. determine whether the line slopes upward, slopes downward, or is horizontal, without graphing the equation.
c. use two points to graph the equation.
Given equation is,
The coefficient of determination of a set of data points is and the slope of the regression line is . Determine the linear correlation coefficient of the data.
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