Deck 17: Reading, Understanding, and Creating Graphs

Question 1

Exhibit 2A-1
Exhibit 2A-1 is an example of a

A) bar chart.
B) scatter diagram.
C) pie chart.
D) time-series plot.
E) dual-scale diagram

Answer 1

time-series plot.

Question 2

Exhibit 2A-2
An inverse relationship between two variables indicates a

A) causation.
B) constant slope.
C) positive slope.
D) negative slope.

Answer 2

negative slope.

Question 3

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.

Answer 3

True

Question 4

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

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 5

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

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

Question 6

Exhibit 2A-2
The slope of an inverse relationship

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 7

Exhibit 2A-2
The type of chart shown in Exhibit 2A-2 is referred to as a

A) dual-scale diagram.
B) time-series graph.
C) bar chart.
D) pie chart.
E) scatter diagram.

Question 8

Exhibit 2A-2
Suppose in 2010, on average, 10 million people were unemployed. According to Exhibit 2A-2, how many of these people had been unemployed for less than five weeks?

A) 3.2 million
B) 3.3 million
C) 3.5 million
D) 32 million
E) 33 million

Question 9

Exhibit 2A-4

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

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

Question 10

A curve shows that every time family income increases by $1, spending increases by $.75. This curve would

A) have a negative slope with decreasing absolute value.
B) have a positive slope with increasing absolute value.
C) have a negative slope with increasing absolute value.
D) have a positive slope with decreasing absolute value.
E) be a straight line with a positive slope.

Question 11

A two-dimensional diagram can be represented by the

A) depth of this page.
B) length of this page.
C) surface of this page.
D) volume of a book.
E) width of this page.

Question 12

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

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 13

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

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

Question 14

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

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

Question 15

According to Exhibit 2A-3, which of the following is true?

A) The magnitude of the slope at point B is the same as it is at point A.
B) The magnitude of the slope at point A is less than the magnitude of the slope at point B.
C) The slope at point A is negative, whereas the slope at point B is positive.
D) The magnitude of the slope at point B is less than the magnitude of the slope at point A.
E) The magnitude of the slope at point A is greater than the magnitude of the slope at point B.

Question 16

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

A) change in dimension.
B) shift in the curve.
C) movement along the curve.
D) change in the intercept.
E) change in the slope.

Question 17

Exhibit 2A-3
In Exhibit 2A-3, the curve has a

A) positive slope with decreasing absolute value.
B) negative slope with decreasing absolute value.
C) negative slope with increasing absolute value.
D) constant negative slope.
E) positive slope with increasing absolute value.

Question 18

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

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.

Question 19

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

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

Question 20

Exhibit 2A-4
Refer to Exhibit 2A-4. Which of the following statements is true?

A) The slope at point B is greater than the slope at point A.
B) The slope at point A is less than the slope at point B.
C) The slope at point A is greater than the slope at point B.
D) The slope at point B is the same as the slope at point A.
E) The slope at point A is negative, whereas the slope at point B is positive.

Question 21

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?

Question 22

Refer to the table below, which shows data for the United States.

Question 23

Exhibit 2A-8
There is a linear relationship between X and Y in Exhibit 2A-8.

Question 24

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.

Question 25

Exhibit 2A-5
Refer to Exhibit 2A-5. Which of the following would best explain the shift from line 1 to line 2?

A) An increase in X
B) A decline in Y
C) A decrease in X
D) A change in a third variable, Z, which affects the relationship between Y and X
E) An increase in the slope

Question 26

The table below shows the inflation rate for the period 2005 through 2010. Suppose you wanted to show that there was not much variation in the inflation rate over this period. How would you represent this table in a graph? Suppose you wanted to show that there was a large amount of variation during this period. How would you represent this table in a graph?

Question 27

Graph the relationship between X and Y such that the relationship between X and Y is linear and positive.

Question 28

A two-dimensional graph cannot be used to show what will happen to the relationship between X and Y if any of the ceteris paribus assumptions change.

Question 29

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.

Question 30

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.

Question 31

Consider a ratio for the total number of miles traveled by car divided by the total number of drivers.

Question 32

The slope of the relationship between X and Y is positive in Exhibit 2A-8.

Question 33

Explain the purpose of each of the following types of graphs:

Question 34

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?

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 35

Exhibit 2A-7

-Exhibit 2A-7 shows the relationship between X and Y. The slope of the relationship is

A) positive, and the slope increases with Y.
B) positive, and the slope decreases with Y.
C) equal to -1.
D) negative, and the slope increases with Y.
E) negative, and the slope decreases with Y.