Quiz Chapter 12: Data Handling

1. 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%

2. Which method of data collection involves giving a written set of questions to respondents?

1. Observation
2. Experiment
3. Interview
4. Questionnaire

3. Which data representation method is BEST suited to show temperature changes over a 24-hour period?

1. Bar Chart
2. Pie Chart
3. Line Graph
4. Dot Plot

4. 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

5. 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

6. What type of data is 'the exact mass of apples in a crate'?

1. Categorical data
2. Continuous numerical data
3. Discrete numerical data
4. Qualitative data

7. 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

8. 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°

9. Which of the following is an example of CATEGORICAL data?

1. Height of students in a class
2. Number of cars in a parking lot
3. Favorite color of t-shirts
4. Time taken to run 100 meters

10. Which data collection method would be most effective to find out how many cars pass through a junction per hour?

1. Interview
2. Questionnaire
3. Observation
4. Experiment