Question

sy=4
r=-0.6
b1x=2
bo=30
y=18

find x and sx

Answer 1

Answer on Question #55262 – Math – Statistics and Probability

sy=4

r=-0.6

b1=-2

bo=30

y=18

Find x and sx

Solution

Linear equation is

$$y = b_0 + b_1 x.$$ $$x = \frac{y - b_0}{b_1} = \frac{18 - 30}{-2} = 6.$$

Using

$$b_1 = r \frac{s_y}{s_x},$$ $$s_x = r \frac{s_y}{b_1} = -0.6 \frac{4}{-2} = 1.2.$$

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