1. Statistics is the branch of mathematics that deals with:
A. Geometry
B. Data Collection and Analysis
C. Trigonometry
D. Algebra

2. A collection of facts and figures is called:
A. Graph
B. Data
C. Mean
D. Probability

3. Data arranged in ascending or descending order is called:
A. Raw Data
B. Grouped Data
C. Ordered Data
D. Frequency

4. The number of times an observation occurs is called:
A. Mean
B. Frequency
C. Median
D. Mode

5. A table showing frequencies is called:
A. Histogram
B. Frequency Distribution Table
C. Pie Chart
D. Bar Graph

6. The arithmetic average of observations is called:
A. Median
B. Mode
C. Mean
D. Range

7. Mean is calculated by:
A. Sum of observations ÷ Number of observations
B. Largest value ÷ Smallest value
C. Total frequency ÷ Class interval
D. None

8. The mean of 2, 4, 6, 8 is:
A. 4
B. 5
C. 6
D. 8

9. The middle value of an ordered data set is called:
A. Mean
B. Mode
C. Median
D. Frequency

10. The most frequently occurring observation is:
A. Mean
B. Median
C. Mode
D. Range

11. The mode of 2, 3, 3, 5, 6 is:
A. 2
B. 3
C. 5
D. 6

12. The median of 1, 3, 5, 7, 9 is:
A. 3
B. 5
C. 7
D. 9

13. For grouped data, the class with highest frequency is called:
A. Median Class
B. Modal Class
C. Mean Class
D. Range Class

14. The difference between the highest and lowest observations is:
A. Mean
B. Median
C. Range
D. Mode

15. The range of 5, 8, 12, 20 is:
A. 12
B. 15
C. 20
D. 25

16. The class interval 10–20 has class size:
A. 5
B. 10
C. 15
D. 20

17. The midpoint of a class interval is called:
A. Frequency
B. Class Mark
C. Median
D. Mode

18. The class mark of 10–20 is:
A. 10
B. 15
C. 20
D. 25

19. Statistics helps in:
A. Decision Making
B. Data Analysis
C. Data Interpretation
D. All of These

20. The sum of all frequencies is denoted by:
A. f
B. Σf
C. x
D. h