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The document contains review materials for Grade 8 Math, specifically focused on **Unit 7: Data Analysis and Probability**. Here’s an overview of the relevant content:

### **Lesson 7.1: Choosing an Appropriate Graph**
It discusses the use of various graphs to represent data visually. Here's a breakdown of the questions related to graph analysis:

1. **Instrument Choice Data (Bar and Circle Graph)**
   - **a)** List 2 observations from the bar graph.
   - **b)** List 2 observations from the circle graph.
   - **c)** Discuss the advantages and disadvantages of the bar graph.
   - **d)** Discuss the advantages and disadvantages of the circle graph.
   - **e)** Determine if a line graph could be used and explain why.

2. **Enrolment Data for the Grade 8 Kitsilano Band Program (2002-2007)**
   - **a)** Graph the enrolment data and justify the graph type.
   - **b)** Suggest other types of graphs that could be used.
   - **c)** Analyze if a circle graph is appropriate and explain why.

Would you like to discuss any specific part of this lesson or require assistance with graphing or explaining any of the problems in more detail?

### Related Questions:
1. What types of graphs are typically used for categorical data?
2. Why is a bar graph considered more appropriate for comparing categories?
3. How do you calculate percentages for a circle graph (pie chart)?
4. What is the best graph for showing changes over time?
5. How would you interpret enrollment trends from 2002 to 2007?

**Tip:** When choosing a graph, think about what aspect of the data you're trying to highlight—comparison, trends, or proportions.

The document contains review materials for Grade 8 Math, specifically focused on Unit 7: Data Analysis and Probability.

Explore Grade 8 Math Unit 7 on Data Analysis and Probability. This lesson helps students understand different graph types, their uses, advantages, and disadvantages. Review includes questions on bar graphs, circle graphs, and graphing data over time from a band program.

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