Question 1

A positive relationship represents a situation where an increase in one variable is associated with an increase in the other variable. Draw three graphs that represent a positive relationship.

Accepted Answer

The answer of A positive relationship represents a situation where...

Question 2

A relationship showing that exam grades are positively related to hours of study can be described by a curve that

Accepted Answer

A)  slopes downward. 
B)  is horizontal. 
C)  has a negative slope with increasing absolute value. 
D)  slopes upward. 
E)  has a negative slope with decreasing absolute value.

Question 3

Exhibit 2A-4 
-Refer to Exhibit 2A-4. The slope of the relationship between X and Y is

Accepted Answer

A)  positive. 
B)  negative. 
C)  zero. 
D)  infinity. 
E)  less than -1.

Question 4

Exhibit 2A-6 
-Exhibit 2A-6 shows the relationship between the price of sodas and the quantities that two families are willing to buy. Suppose that both families are willing to buy more sodas while the soda price remain constant. Which of the following is correct?

Accepted Answer

A)  A shift of both curves to the right 
B)  A shift of both curves to the left 
C)  A shift of the curve for Family A to the right and a shift of the curve for Family B to the left 
D)  A shift of the curve for Family B to the right and a shift of the curve for Family A to the left 
E)  A movement along each of the two curves

Question 5

Exhibit 2A-5 
-Refer to Exhibit 2A-5. The movement from C to B is called a

Accepted Answer

A)  change in dimension. 
B)  shift in the relationship between X and Y. 
C)  movement along the curve. 
D)  parallel change. 
E)  constant.

Question 6

Suppose the value of one variable rises while the value of another variable falls; then the slope of the relationship between the two variables is between 0 and 1.

Accepted Answer

A) True 
 B)False

Question 7

Explain the purpose of each of the following types of graphs:
(A)Time-series graph
(B)Scatter plot
(C)Pie chart

Accepted Answer

The answer of Explain the purpose of each of the...

Question 8

Refer to the table below. Analyze the data on the number of meals served at small and large restaurants. The number of meals served will vary with the number of cooks employed at the restaurant.   (A)Show the relationship between cooks and meals served by graphing two curves with cooks on the horizontal axis and the number of meals on the vertical axis. How do the slopes of the curves change as more cooks are employed?
(B)Is the change in the number of cooks a shift in the curve or a movement along the curve?
(C)Is the change in the size of the restaurant a shift in the curve or a movement along the curve?

Accepted Answer

The answer of Refer to the table below. Analyze the...

Question 9

Consider a straight line with a slope of +1 that intersects the origin. It dissects the positive X-Y quadrant. Select any point on the line. What must be true about the distance between the origin and the X coordinate and between the origin and the Y coordinate?

Accepted Answer

The answer of Consider a straight line with a slope...

Question 10

Exhibit 2A-3 
-In Exhibit 2A-3, the curve shows

Accepted Answer

A)  a constant relationship. 
B)  a direct relationship. 
C)  a straight-line relationship. 
D)  an inverse relationship. 
E)  normative economics.

Question 11

The slope of an inverse relationship

Accepted Answer

A)  must be positive. 
B)  is calculated by dividing the variable on the horizontal axis by the variable on the vertical axis. 
C)  must be negative. 
D)  can never be measured. 
E)  must be constant everywhere along the curve.

Question 12

Suppose a curve shows that every time family income increases by $1, spending increases by $.75. If spending increases by $500, then income increased by

Accepted Answer

A)  $667. 
B)  $500. 
C)  $375. 
D)  $125.

Question 13

Exhibit 2A-1 
-According to Exhibit 2A-1, in 2008 the

Accepted Answer

A)  inflation rate was close to 5 percent, and the unemployment rate was about 7 percent. 
B)  unemployment rate and the inflation rate were equal. 
C)  inflation rate was close to 6 percent, and the unemployment rate was above 2 percent. 
D)  inflation rate was close to 2 percent, and the unemployment rate was close to 6 percent. 
E)  inflation rate was above 10 percent, and the unemployment rate was close to 2 percent.

Question 14

Exhibit 2A-5 
-According to Exhibit 2A-5, the slope of line 1 may be 1.25, whereas the slope of line 2 may be .75.

Accepted Answer

A) True 
 B)False

Question 15

Exhibit 2A-4 
-The curve in Exhibit 2A-4 represents a(n)

Accepted Answer

A)  negative slope. 
B)  slope that is constant and positive. 
C)  slope that is not constant and positive. 
D)  inverse relationship. 
E)  slope that is constant.

Exam 20: Reading, Understanding, and Creating Graphs

A positive relationship represents a situation where an increase in one variable is associated with an increase in the other variable. Draw three graphs that represent a positive relationship.

A relationship showing that exam grades are positively related to hours of study can be described by a curve that

Exhibit 2A-4 -Refer to Exhibit 2A-4. The slope of the relationship between X and Y is

Exhibit 2A-6 -Exhibit 2A-6 shows the relationship between the price of sodas and the quantities that two families are willing to buy. Suppose that both families are willing to buy more sodas while the soda price remain constant. Which of the following is correct?

Exhibit 2A-5 -Refer to Exhibit 2A-5. The movement from C to B is called a

Suppose the value of one variable rises while the value of another variable falls; then the slope of the relationship between the two variables is between 0 and 1.

Explain the purpose of each of the following types of graphs: (A)Time-series graph (B)Scatter plot (C)Pie chart

Consider a straight line with a slope of +1 that intersects the origin. It dissects the positive X-Y quadrant. Select any point on the line. What must be true about the distance between the origin and the X coordinate and between the origin and the Y coordinate?

Exhibit 2A-3 -In Exhibit 2A-3, the curve shows

The slope of an inverse relationship

Suppose a curve shows that every time family income increases by $1, spending increases by $.75. If spending increases by $500, then income increased by

Exhibit 2A-1 -According to Exhibit 2A-1, in 2008 the

Exhibit 2A-5 -According to Exhibit 2A-5, the slope of line 1 may be 1.25, whereas the slope of line 2 may be .75.

Exhibit 2A-4 -The curve in Exhibit 2A-4 represents a(n)