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 stem-and-leaf plot, the stems are 1, 2, 3 and the leaves for stem 2 are 0, 3, 3, 5, 8. What is the modal value in stem 2?

1. 20
2. 23
3. 25
4. 28

3. 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

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. Which chart uses circular sectors to show proportions of a whole?

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

6. 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

7. 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

8. 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

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

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

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