Quiz Chapter 12: Data Handling

1. What happens to the width of the bars in a properly drawn bar chart?

1. Width must be proportional to frequency
2. Width must be uniform across all bars
3. Width should decrease from left to right
4. Width depends on the category label length

2. In a pie chart representing 60 students, 15 students chose Badminton. What is the angle of the sector for Badminton?

1. 90°
2. 60°
3. 45°
4. 120°

3. In a pie chart, the sum of all sector angles must always equal:

1. 180°
2. 360°
3. 100°
4. 90°

4. The sector angle for 'Math' in a pie chart is 120°. If the total number of respondents is 90, how many students chose Math?

1. 20
2. 30
3. 40
4. 45

5. A survey collected data on the number of goals scored in 10 matches: 2, 0, 1, 3, 2, 1, 2, 4, 1, 2. What is the mode?

1. 1
2. 2
3. 3
4. 4

6. In a stem-and-leaf plot, if a stem represents tens and a leaf represents ones, what number does Stem 4 and Leaf 7 represent?

1. 74
2. 4.7
3. 47
4. 407

7. The pie chart angle for 'Blue' is 54°. What fraction of the total data does 'Blue' represent?

1. 320
2. 15
3. 16
4. 310

8. What is the primary advantage of a dot plot?

1. Shows trends over time clearly
2. Compares proportions as parts of a whole circle
3. Displays individual data points and highlights clustering or outliers
4. Calculates exact percentages automatically

9. In a dot plot, what does a dot represent?

1. A single category
2. A single observation or data point
3. Ten data points
4. The average value

10. A bar chart shows the frequency of grades A, B, C, and D as 8, 12, 10, and 6 respectively. What percentage of students scored grade B?

1. 20%
2. 30%
3. 33.3%
4. 40%