Edexcel GCSE Foundation Maths: What are Pictograms?
Introduction
Pictograms are a type of chart that uses pictures or symbols to represent data. They are a simple and visually appealing way to display information, making it easy to understand.
Key Features of Pictograms
- Pictures: Each picture represents a specific value.
- Key: A key explains what each picture represents.
- Scale: The key indicates the value that each picture represents, e.g., one picture could represent 10 people, 50 cars, or 100 pounds.
- Clear Title: A clear title tells you what the pictogram is showing.
Example
Let's say we want to show the number of cars sold in a week at a car dealership. Here's how we could create a pictogram:
Title: Cars Sold This Week
Key: ? = 10 Cars
Day |
Cars Sold |
Monday |
?????????? |
Tuesday |
???????????????? |
Wednesday |
??????????????????????????????? |
Thursday |
??????????????????????? |
Friday |
??????????????????? |
Saturday |
???????????????????????????????????????????????????????????????????? |
Sunday |
?????????????????????????????????????? |
Explanation:
- This pictogram shows the number of cars sold each day of the week.
- The key indicates that each car symbol represents 10 cars.
- You can quickly see that the most cars were sold on Saturday.
Advantages of Pictograms
- Easy to understand: They are visually appealing and easy to interpret, even for people who are not comfortable with numbers.
- Engaging: The use of pictures makes them more engaging and memorable than other types of charts.
- Compare data: They make it easy to compare data across different categories.
Disadvantages of Pictograms
- Limited accuracy: Pictograms are not as precise as other types of charts, such as bar charts or line graphs.
- Limited data: They are not suitable for displaying large amounts of data.
Conclusion
Pictograms are a useful tool for displaying data in a simple and visually appealing way. They are especially useful for presenting information to a wide audience, including children. However, they are not always the best choice for displaying complex or precise data.