Exam 20: Reading, Understanding, and Creating Graphs

Refer to the table below, which shows data for the United States. (A)Construct a time-series plot of the unemployment rate. (B)Construct a time-series plot of the inflation rate. (C)Construct a scatter plot of the data. Is there any apparent correlation between the inflation rate and the unemployment rate in these data?

Consider a ratio for the total number of miles traveled by car divided by the total number of drivers. (A)If both the total number of miles traveled by car and the total number of drivers increase over time, what must be true for the ratio to rise over time? (B)If both the total number of miles traveled by car and the total number of drivers fall over time, what must be true for the ratio to rise over time? (C)If the ratio is not changing over time, what must be true about the total number of miles traveled by car and the total number of drivers over time, and relative to each other?

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.

Graph the relationship between X and Y such that the relationship between X and Y is linear and positive. (A)On this graph, show what happens to Y if X increases. (B)Suppose there is a third variable, Z, that causes Y to decrease (for any given value of X) whenever Z increases. Show what happens to the relationship between X and Y.

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

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

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

A two-dimensional diagram can be represented by the

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

An inverse relationship between two variables indicates a

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

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

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

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

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

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?

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?

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

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

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