Pie Charts - SS2 Economics Past Questions and Answers - page 1
What is a pie chart?
A type of technical representation that uses a circle to represent the total value and slices of the circle to represent the relative proportions of different categories.
A type of graphical representation that uses a circle to represent the total value and slices of the circle to represent the relative proportions of different categories.
A type of mathematical representation that uses a circle to represent the total value and slices of the circle to represent the relative proportions of different categories.
What is the application of pie charts?
Playing a game
Comparing proportions
Planting a garden
Can pie charts be used to show percentages?
Yes
No
Sometimes
What is the benefit of using a pie chart to visualize data?
It makes the information incoherent
It makes the data arranged in tables
It makes the data easy to understand
Can pie charts be used to make informed decisions?
Yes
No
It depends
A survey was conducted to find out the distribution of different types of pets in a neighbourhood. The following table shows the results of the survey.
|
Pet types |
Number of pet owners |
|
Dogs |
360 |
|
Cats |
240 |
|
Fish |
50 |
|
Birds |
300 |
|
Other |
50 |
|
Total |
1000 |
I. Formulate a pie chart to represent the data above
II. What percentage of pet owners own dogs?
I. Step 1: Identify the variable and categories: The variable is the "percentage" and the categories are the different types of pets: Dogs, Cats, Fish, Birds, and Other.
Step 2: Calculate the angle of each sector: Multiply the percentage of each category by 360° to get the angle of each sector.
Step 3: Draw a circle: Draw a circle to represent the pie chart.
Step 4: Draw the sectors: For each category, draw a sector in the circle with an angle equal to the angle calculated in Step 2. The sectors should be arranged in a clockwise order starting from the top.
Step 5: Label the chart: Title the chart as "Distribution of Pet owners in the neighborhood" Label each sector with the corresponding category name and percentage.
II.To find the percentage of pet owners who own dogs, we can use the formula:
Percentage = (Number of pet owners with dogs / Total number of pet owners) x 100
Substituting the values from the table, we get:
Percentage = (360 / 1000) x 100 = 36%
Thus, 36% of pet owners in the neighbourhood own dogs.