Question 1: A bar chart shows the number of books read by students in a month. If the bar for Grade 6 reaches 15 on the graph, how many students in Grade 6 read exactly 10 books?

Answer: 5

Question 2: In the bar chart, the number of students who prefer apples is 12, while those who prefer bananas is 20. What is the ratio of students who prefer apples to those who prefer bananas?

Answer: 3:5

Question 3: A bar chart shows that 18 students voted for their favorite color as blue, and 9 for green. What percentage of the total votes (blue + green) did blue receive?

Answer: 66.67

Question 4: Construct a bar chart to compare the number of students choosing different sports: Soccer (10), Basketball (15), Tennis (8). Use the grid to draw your chart.

Answer: Students draw their bar chart accordingly.

Question 5: A bar chart shows that 25 students like chocolate, 15 like vanilla, and 10 like strawberry. Which flavor is the most popular, and how many more students prefer it than strawberry?

Answer: Chocolate; 15

Question 6: Explain what it means if a bar in a chart is twice as high as another bar. Use an example with numbers.

Answer: If one bar is 10 and another is 20, the second bar is twice as high, meaning twice as many or twice the value.

Question 7: A bar chart shows 14 students prefer reading fiction and 7 prefer non-fiction. What is the difference in the number of students?

Answer: 7

Question 8: If the bar for Grade 8 shows 20 students and the bar for Grade 7 shows 10 students, what is the percentage increase in the number of students from Grade 7 to Grade 8?

Answer: 100

Question 9: Using the data from a bar chart, interpret what the most common choice was and justify your answer.

Answer: Students' most common choice is the one with the highest bar height; e.g., if 'Soccer' has 20 and others less, then Soccer is most preferred.

Question 10: A student sees a bar chart with a mislabel: the bar for 'Cats' shows 8, but the label says 'Dogs'. Identify the mistake and suggest a correction.

Answer: The label should be 'Cats' instead of 'Dogs'.

Question 11: Challenge: The bar for '2019' shows 30 students, and for '2020' it shows 45 students. Calculate the percentage increase and explain what it indicates about the trend.

Answer: 50; The number of students increased by half, indicating a rising trend.