Appendix: Graphing Relationships Among More Than Two Variables

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When graphing a relationship, what does ceteris paribus refer to?

Letting all the variables change at once
Changing the origin of the graph
Rescaling the coordinates
Holding constant all but two variables (correct)

In evaluating a relationship between x and y, what does ceteris paribus mean for other variables?

Are not relevant to x and y
Are not changing while x and y change (correct)
Move with x and y
Move in opposite directions to x and y

What does the ceteris paribus condition imply when graphing the relationship between x and y?

The value of x is held constant
No other variables are related to x and y
The value of y is held constant
Other variables not shown are held constant (correct)

If the quantity consumed of pizza is dependent on the price of pizza, income of purchasers, and taste for pizza, what happens when graphing the relationship between price and quantity consumed?

Price and quantity consumed are the only variables allowed to change (B) Signup and view all the answers

If consumers' taste for pizza and income are variables affecting pizza consumption, which ones change when graphing the price-quantity relationship?

Price and quantity consumed (D) Signup and view all the answers

In a graph showing the relationship between x and y under ceteris paribus, what is held constant?

Other non-shown variables (A) Signup and view all the answers

What type of relationship exists between the outdoor temperature and the consumption of ice tea for the Jones household?

Positive relationship (B) Signup and view all the answers

In a scatter diagram with price of vacations to Mexico on the vertical axis and price of vacations to California on the horizontal axis, what type of relationship is shown?

Positive relationship (D) Signup and view all the answers

If the slope of a line that graphs the relationship between variables x and y is positive, what do we know about the variables?

The variables have an inverse relationship (B) Signup and view all the answers

What happens to ice tea consumption for the Jones household with every ten degrees increase in outdoor temperature?

Increases by 5 glasses (C) Signup and view all the answers

Which curve in the figure shows a positive relationship between variables x and y?

Only curve A (B) Signup and view all the answers

Which curve in the figure shows a negative relationship between variables x and y?

None of the curves show a negative relationship (A) Signup and view all the answers

In the provided text, what does a high correlation between variables along the x-axis and y-axis indicate?

Changes in the variable on the x-axis cause changes in the variable on the y-axis. (C) Signup and view all the answers

Why were axis breaks used in the graph in the provided text?

To indicate jumps from the origin to the first recorded values on the axes. (A) Signup and view all the answers

What does the axis break in the x-axis of the graph imply?

Unemployment rate was never less than 3 percent for the years covered. (D) Signup and view all the answers

How are variables represented if they are strongly negatively related on a graph?

Changes in one variable cause changes in the opposite direction in the other variable. (B) Signup and view all the answers

What do variables being strongly positively related signify on a graph?

Both variables increase or decrease together. (B) Signup and view all the answers

When two variables are said to not be related on a graph, what does this suggest?

Both variables do not affect each other's values. (B) Signup and view all the answers