If Sy = 1, and Sx = 1, and r = .6, what will the value of b be?
| .36 |
| .60 |
| 1.00 |
| 0 |
r = Sxy / sqrt( Sx * Sy)
Sxy = r * sqrt ( sx * Sy)
= 0.6 * sqrt( 1 * 1)
= 0.6
b = Sxy / Sx
= 0.6 / 1
= 0.6
b = 0.6
Compute the correlation coefficient. (Negative value should be indicated by a minus sign. Round sx, sy and r to 3 decimal places.) x y (x−x¯) (y−y¯) (x−x¯)2 (y−y¯)2 (x−x¯) (y−y¯) 2 11 -4 16 4 18 1 1 3 1 5 -10 100 5 23 2 4 16 3 18 3 0 0 x¯ = y¯ = Sx = Sy = r =
Given that x = 3.5000, sx = 2.5884, y = 4.1000, sy = 1.9657, and r
= -0.9552, determine the least-squares regression line.
y = ____ x + (_____)
A data set is given below. (a) Draw a scatter diagram. Comment on the type of relation that appears to exist be (b) Given that x = 3.5000, Sy = 2.5884, y = 4.1000, sy = 1.9657, and r = -0.9552, det (c) Graph the least squares regression line on the...
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