1. What type of relationship, positive or negative, is portrayed in the followin

Question

1. What type of relationship, positive or negative, is portrayed in the following sentence? As foreclosure rates in a neighborhood begin to increase, the likelihood of a family having neighborhood based social support decreases.

a. Positive

b. Negative

2. Interpret the slope in the following regression line: caret y = 0.34+1.4 (x)

a. For every one unit increase in x, there is a 1.4 increase in y.

b. For every one unit increase in x, there is a 0.34 increase in y.

c. For every one unit increase in y, there is a 1.4 increase in x.

d. For every one unit increase in y, there is a 0.34 increase in x.

3. Interpret the slope in the following regression line: caret y = -23.1 - 0.9 (x)

a. For everyone unit increase in y, there is a 23.1 decrease in x.

b. For everyone unit increase in x, there is a 0.9 decrease in y.

c. For everyone unit increase in y, there is a 0.9 decrease in x.

d. For everyone unit increase in x, there is a 23.1 decrease in y.

Given this regression equation, caret y = 0.34+1.4 (x) , if x is 2, what is caret y?

a. 1.74

b. 2.06

c. 2.91

d. 3.14

Given this regression equation, caret y = -23.1-0.9(x), if x is 10, what is caret y?

a. -22.2

b. -17.3

c. -32.1

d. -14.1

Explanation / Answer

1. b) Negative (because as  foreclosure rates in a neighborhood begin to increase, the likelihood of a family having neighborhood based social support decreases)

2. a. For every one unit increase in x, there is a 1.4 increase in y.

3. b. For everyone unit increase in x, there is a 0.9 decrease in y.

4. y = 0.34+1.4*2=3.14 thus answer is D (by putting value of x in the equation)

5. y = -23.1-0.9*10=-32.1 answer is C

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