WorksheetsEconomics Test
Total questions: 99
Worksheet time: 2hrs 39mins
Orthi and Fatima are discussing their monthly expenses. They notice that the amount they spend on groceries varies each month. What is this changing amount called in economics?
A constant number used in equations.
A quantity that changes over time.
A quantity that can take on more than one value.
A fixed value used to model economic behaviour.
Amina and Fatima are discussing how to plot an economic graph. Which variable should they typically place on the horizontal axis?
Dependent variable
Constant variable
Independent variable
Slope
During a class project, Orthi and Amina are analyzing a graph that shows the relationship between the number of hours studied and the test scores achieved. What does the vertical axis (y-axis) measure in this graph?
Independent variables
Dependent variables
Constant values
Time
Orthi and Amina are plotting a graph to track their savings over time. What does the origin represent in their graph?
The maximum value of the y-axis
The point where x and y are both zero
The slope of the line
The point where variables are unrelated
Fatima noticed that whenever she studied for an extra hour, her test scores improved. This suggests a causal relationship because:
Two variables move together.
The value of one variable influences the other.
There is a correlation between variables.
Variables are unrelated.
Vivi and Ashy are studying economics and come across a graph. Which of the following is an exception to the convention of placing the independent variable on the x-axis?
Quantity of goods and time
Price and quantity of goods
Population and GDP per capita
Temperature and sales of hot drinks
Amina and Vivi are studying the relationship between the number of hours they study and their test scores. A positive relationship between these variables is shown when:
The curve slopes downward from left to right
The curve is horizontal
An increase in one variable leads to an increase in another
There is no change in either variable
Orthi and Fatima are studying the relationship between the amount of time spent studying and the number of errors made on a test. What is indicated by a negative linear relationship in their study?
Variables are unrelated
Both variables increase simultaneously
One variable increases while the other decreases
The curve is a straight line through the origin
Noor and Amina are measuring the steepness of a hill for their geography project. They need to calculate the slope of the hill. Which formula should they use?
slope=ΔxΔy
slope=Δy+Δx
slope=Δy/Δx
slope=x×y
During a math class, Noor and Fatima were discussing the graph of a function. They noticed that the graph had a horizontal curve. What does this indicate?
A slope equal to zero
An infinite slope
A positive relationship
A negative relationship
Orthi and Vivi are analyzing the relationship between the number of hours they study and their test scores. What defines a linear relationship in this context?
A curve that slopes upward and becomes steeper
A constant slope throughout the relationship
A curve with a changing slope
A curve that is horizontal
Amina and Ashy are trying to determine the slope of a hill for their geography project. How does the arc method calculate slope?
By measuring the slope of a tangent line at one point
By averaging the change in x and y over the entire curve
By using a straight line between two points on the curve
By measuring the intercept of the curve
During a hike, Noor and Amina reach the top of a hill. At this maximum point on their path:
The slope changes from negative to positive
The slope changes from positive to negative
The path is always linear
There is no change in slope
Amina and Noor are analyzing the cost of production for their new startup. They notice that the cost per unit decreases initially, reaches a minimum point, and then starts increasing as they produce more units. What kind of curve does this scenario represent?
A minimum point
A maximum point
A linear relationship
A horizontal slope
Orthi and Amina are planning to build a triangular garden under a curved fence. How do they calculate the area of the right triangle formed by the garden?
Multiply the height by the base
Divide the base by the height
Area=Base×Height/2
Add the height to the base
Amina is designing a triangular garden with a base of 10 meters and an area of 50 square meters. What is the height of the garden?
10 meters
25 meters
5 meters
100 meters
Vivi and Ashy are analyzing the sales data of their lemonade stand over the summer. What type of graph should they use to show how their sales changed each week?
The relationship between two variables at a single point in time
The distribution of percentages within a total
Changes in a variable over time
The correlation between two datasets
Orthi and Fatima are analyzing the relationship between study hours and test scores. In their scatter diagram, what do the points represent?
Changes over time for a single variable
Individual observations of the x- and y-variables
Percentages of a total amount
Bars indicating quantities
Orthi and Noor are analyzing the budget allocation of their school's annual festival. What is the primary use of a pie chart in this context?
To represent relationships between two variables
To display changes in variables over time
To illustrate how a total is divided among components
To compare magnitudes of different values
Vivi and Noor are analyzing a bar graph that shows the number of books read by students in different months. What do the varying lengths or heights of the bars indicate?
The slope of the graph
The values of a variable
The changes in percentages over time
The correlation between variables
Noor and Amina are analyzing a graph of monthly sales data for their school project. How can the scale of the graph influence their interpretation of the sales trends?
Small increments exaggerate changes, while large increments diminish them
Large increments exaggerate changes, while small increments diminish them
It has no effect on interpretation
It only affects the accuracy of the data
Orthi and Amina are analyzing a graph of their monthly expenses. What effect does truncating the y-axis have on the appearance of their data?
Makes changes appear smaller
Omits important observations
Makes changes appear larger
Flattens the curve
During a study on the impact of study hours on exam scores, Ashy and Fatima forgot to include the variable of sleep hours. Which of the following best describes this omitted variable?
A variable that is measured inaccurately
A variable that influences two others, creating a misleading relationship
A variable that changes unpredictably
A variable that is unrelated to the main variables
Vivi and Noor are studying the relationship between the number of hours spent studying and exam scores. Reverse causality occurs when:
Variables are unrelated
The dependent variable incorrectly appears to influence the independent variable
An omitted variable causes a misleading relationship
The slope of a graph is calculated incorrectly
Vivi noticed that as her income increased, she was able to spend more on her hobbies. Which of the following illustrates a similar positive relationship?
Higher income leading to higher spending
Higher prices leading to lower sales
More education leading to less income
Increased temperature having no effect on sales
Fatima noticed that when she spends more time studying, her free time decreases. This is an example of:
Two variables are unrelated
An increase in one variable leads to an increase in the other
An increase in one variable leads to a decrease in the other
There is no change in the dependent variable
Fatima and Noor are planning a road trip. They start at point A, which is 10 miles from their home, and reach point B, which is 20 miles away. If the elevation at point A is 25 feet and at point B is 30 feet, what is the slope of the road between these two points?
2
0.5
5
1
Ashy and Vivi are planning to build a ramp for their skateboard park. If they want the ramp to be perfectly flat, what should be the slope of the ramp?
1
0
Undefined
Infinite
Orthi and Vivi are planning a road trip. They want to calculate the average speed of their journey. If they travel a distance of 8 miles in 4 hours, what is their average speed using the arc method?
2 mph
0.5 mph
4 mph
8 mph
Fatima and Noor are measuring the growth of a plant over a week. They want to find out the average rate of growth between the start and end of the week. What method should they use?
The slope at a single point
The average slope between two points
The area under a curve
The intercept of a curve
Fatima and Noor are analyzing the performance of a roller coaster. They want to know at which point the speed of the roller coaster is neither increasing nor decreasing. Where is the slope of the speed-time curve zero?
At any point on a linear curve
At a maximum or minimum point
On a horizontal line
When variables are unrelated
Fatima is hiking up a hill and notices that the path first goes downhill and then uphill. What does this change in slope indicate?
A maximum point
A minimum point
A constant slope
A horizontal curve
Fatima is designing a triangular garden with a base of 8 meters and a height of 10 meters. Calculate the area of the garden.
80
40
20
16
Amina is helping her friend Vivi with a math problem. They are trying to find out what shape is formed by the area below a linear curve on a graph. What shape is it?
Rectangle
Right triangle
Circle
Trapezoid
Orthi and Vivi are analyzing the sales data of their lemonade stand over the summer. What does the x-axis typically represent in their time-series graph?
Values of a variable over time
Dates or time periods
Categories of data
Percentages of a total
Fatima is analyzing data for her economics project. Which of the following is an example of a time-series graph?
GDP per capita measured monthly from 2000 to 2020
The relationship between income and education levels
The share of income spent on goods by different age groups
The number of cars owned by a sample of families
Amina and Noor are analyzing their science project data. They decide to use a scatter diagram to:
Display percentages of a whole
Show trends over time
Illustrate the relationship between two variables
Represent data as bars of varying heights
Amina and Noor are analyzing the relationship between the number of hours studied and the scores obtained in a test. In their scatter diagram, a strong positive correlation is indicated by:
Points scattered randomly
A curve sloping downward
Points closely aligned along an upward-sloping line
A horizontal line of points
Orthi and Amina are organizing a school event and want to show how the budget is divided among different categories. A pie chart is most useful for displaying:
Percentages that make up a total
Relationships between two variables
Changes in a variable over time
The slope of a curve
In a pie chart showing the favorite fruits of students, a larger “slice” for apples indicates:
A stronger correlation
A greater proportion of the total
A smaller percentage
A lack of variability
Fatima is creating a bar graph to display the number of books read by her friends in a month. What do the lengths or heights of the bars in her bar graph represent?
Categories of data
Percentages of a whole
Values of a variable being measured
Units of time
Vivi and Ashy are analyzing data for their school project. Which of the following is best represented by a bar graph?
The unemployment rate over 20 years
The percentage of income spent by different age groups
The correlation between income and education
The number of goods sold at various prices
Amina and Fatima are analyzing a graph of their monthly savings. They notice that using small increments on the graph’s scale tends to:
Visually exaggerate changes
Make data appear flat
Eliminate truncation issues
Minimize the relationship between variables
Fatima and Noor are analyzing a graph of their monthly savings over the year. If the graph uses large increments on its axis, it tends to:
Visually diminish changes
Accurately reflect relationships
Exaggerate changes
Indicate omitted variables
Amina and Noor are analyzing a graph for their science project. What does truncation on a graph’s axis involve?
Omitting part of the range of values
Changing the slope of the curve
Using equal intervals on the scale
Adjusting the area under the curve
Amina is preparing a presentation for her class and wants to use a graph to show the changes in temperature over the past decade. Why might she use truncation in her graph construction?
To minimize distortion
To visually exaggerate changes
To save space in presentation
To ensure all data points fit on the graph
Fatima and Orthi are analyzing the relationship between study hours and exam scores. However, they forgot to include the variable of sleep hours in their analysis. This omission can cause:
A graph to show no relationship between variables
An inaccurate appearance of a causal relationship
The slope of a curve to be zero
A graph to be truncated
In the example provided, snowfall was the omitted variable influencing:
Fatima's sales of snow shovels and de-icer fluid
The number of hours studied and GPA
The price of a good and its sales
The amount of tax revenue collected
Reverse causality occurs when Noor and Amina are studying the relationship between exercise and happiness, but they mistakenly think that happiness causes exercise rather than exercise causing happiness. This is an example of:
Two variables are completely unrelated
The dependent and independent variables are confused
A graph’s scale is distorted
The slope of a curve is zero
Fatima noticed that her friend Amina, who has a high GPA, tends to study a lot. An example of reverse causality in this scenario is:
Concluding that studying more improves GPA
Assuming a higher GPA causes more studying
Correlating snowfall with de-icer sales
Relating income to education levels
What is a variable in economics?
A constant number used in equations
A quantity that changes over time
A quantity that can take on more than one value
A fixed value used to model economic behavior
In an economic graph, which variable is typically on the horizontal axis?
Dependent variable
Constant variable
Independent variable
Slope
What does the vertical axis (y-axis) measure in an economic graph?
Independent variables
Dependent variables
Constant values
Time
What does the origin represent in a graph?
The maximum value of the y-axis
The point where x and y are both zero
The slope of the line
The point where variables are unrelated
A causal relationship exists when:
Two variables move together.
The value of one variable influences the other.
There is a correlation between variables.
Variables are unrelated.
Which of the following is an exception to the convention of placing the independent variable on the x-axis?
Quantity of goods and time
Price and quantity of goods
Population and GDP per capita
Temperature and sales of hot drinks
A positive relationship between variables is shown when:
The curve slopes downward from left to right
The curve is horizontal
An increase in one variable leads to an increase in another
There is no change in either variable
What is indicated by a negative linear relationship?
Variables are unrelated
Both variables increase simultaneously
One variable increases while the other decreases
The curve is a straight line through the origin
The slope of a curve is determined using which formula?
slope=ΔxΔy
slope=Δy+Δx
slope=Δy/Δx
slope=x×y
A horizontal curve indicates which of the following?
A slope equal to zero
An infinite slope
A positive relationship
A negative relationship
What defines a linear relationship?
A curve that slopes upward and becomes steeper
A constant slope throughout the relationship
A curve with a changing slope
A curve that is horizontal
How does the arc method calculate slope?
By measuring the slope of a tangent line at one point
By averaging the change in x and y over the entire curve
By using a straight line between two points on the curve
By measuring the intercept of the curve
At a maximum point on a curve:
The slope changes from negative to positive
The slope changes from positive to negative
The curve is always linear
There is no change in slope
A U-shaped curve represents which of the following?
A minimum point
A maximum point
A linear relationship
A horizontal slope
How do you calculate the area of a right triangle below a curve?
Multiply the height by the base
Divide the base by the height
Area=Base×Height/2
Add the height to the base
What is the area of a triangle with a base of 10 and an area of 50?
10
25
5
100
What does a time-series graph show?
The relationship between two variables at a single point in time
The distribution of percentages within a total
Changes in a variable over time
The correlation between two datasets
In a scatter diagram, what do the points represent?
Changes over time for a single variable
Individual observations of the x- and y-variables
Percentages of a total amount
Bars indicating quantities
What is the primary use of a pie chart in economics?
To represent relationships between two variables
To display changes in variables over time
To illustrate how a total is divided among components
To compare magnitudes of different values
In a bar graph, what do the varying lengths or heights of the bars indicate?
The slope of the graph
The values of a variable
The changes in percentages over time
The correlation between variables
How can a graph's scale influence its interpretation?
Small increments exaggerate changes, while large increments diminish them
Large increments exaggerate changes, while small increments diminish them
It has no effect on interpretation
It only
What does truncating an axis typically do to the appearance of data?
A. Makes changes appear smaller
B. Omits important observations
C. Makes changes appear larger
D. Flattens the curve
Which of the following best describes an omitted variable?
A. A variable that is measured inaccurately
B. A variable that influences two others, creating a misleading relationship
C. A variable that changes unpredictably
D. A variable that is unrelated to the main variables
Reverse causality occurs when:
A. Variables are unrelated
B. The dependent variable incorrectly appears to influence the independent variable
C. An omitted variable causes a misleading relationship
D. The slope of a graph is calculated incorrectly
Which of the following illustrates a positive relationship?
A. Higher income leading to higher spending
B. Higher prices leading to lower sales
C. More education leading to less income
D. Increased temperature having no effect on sales
A negative relationship occurs when:
A. Two variables are unrelated
B. An increase in one variable leads to an increase in the other
C. An increase in one variable leads to a decrease in the other
D. There is no change in the dependent variable
What is the slope between points A(10,25) and B(20,30)?
A. 2
B. 0.5
C. 5
D. 1
A horizontal line has what slope?
A. 1
B. 0
C. Undefined
D. Infinite
Using the arc method, calculate the slope for a curve where Δx=4 and Δy=8.
A. 2
B. 0.5
C. 4
D. 8
What does the arc method measure?
A. The slope at a single point
B. The average slope between two points
C. The area under a curve
D. The intercept of a curve
Where is the slope of a curve zero?
At any point on a linear curve
At a maximum or minimum point
On a horizontal line
When variables are unrelated
What does a negative slope followed by a positive slope indicate?
A maximum point
A minimum point
A constant slope
A horizontal curve
Calculate the area of a triangle with a base of 8 and a height of 10.
80
40
20
16
The area below a linear curve forms what shape?
Rectangle
Right triangle
Circle
Trapezoid
What does the x-axis typically represent in a time-series graph?
Values of a variable over time
Dates or time periods
Categories of data
Percentages of a total
Which of the following is an example of a time-series graph?
GDP per capita measured monthly from 2000 to 2020
The relationship between income and education levels
The share of income spent on goods by different age groups
The number of cars owned by a sample of families
A scatter diagram is used to:
Display percentages of a whole
Show trends over time
Illustrate the relationship between two variables
Represent data as bars of varying heights
In a scatter diagram, a strong positive correlation is indicated by:
Points scattered randomly
A curve sloping downward
Points closely aligned along an upward-sloping line
A horizontal line of points
A pie chart is most useful for displaying:
Percentages that make up a total
Relationships between two variables
Changes in a variable over time
The slope of a curve
What do the lengths or heights of bars in a bar graph represent?
Categories of data
Percentages of a whole
Values of a variable being measured
Units of time
Which of the following is best represented by a bar graph?
The unemployment rate over 20 years
The percentage of income spent by different age groups
The correlation between income and education
The number of goods sold at various prices
Small increments on a graph’s scale tend to:
Visually exaggerate changes
Make data appear flat
Eliminate truncation issues
Minimize the relationship between variables
A graph using large increments on its axis tends to:
Visually diminish changes
Accurately reflect relationships
Exaggerate changes
Indicate omitted variables
What does truncation on a graph’s axis involve?
Omitting part of the range of values
Changing the slope of the curve
Using equal intervals on the scale
Adjusting the area under the curve
Why is truncation used in graph construction?
To minimize distortion
To visually exaggerate changes
To save space in presentation
To ensure all data points fit on the graph
An omitted variable can cause:
A graph to show no relationship between variables
An inaccurate appearance of a causal relationship
The slope of a curve to be zero
A graph to be truncated
"In the example provided, snowfall was the omitted variable influencing:"
Sales of snow shovels and de-icer fluid
The number of hours studied and GPA
The price of a good and its sales
The amount of tax revenue collected
Reverse causality occurs when:
Two variables are completely unrelated
The dependent and independent variables are confused
A graph’s scale is distorted
The slope of a curve is zero
An example of reverse causality is:
Concluding that studying more improves GPA
Assuming a higher GPA causes more studying
Correlating snowfall with de-icer sales
Relating income to education levels
