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Textbook Questions
1. 
Multiple choice questions  I
Difficulty: easy 
4

2. 
Multiple choice questions  II
Difficulty: easy 
3

3. 
Two mark example problems
Difficulty: medium 
6

4. 
Two mark exercise problems  I
Difficulty: medium 
8

5. 
Two mark exercise problems  II
Difficulty: medium 
6

6. 
Five mark example problems  I
Difficulty: hard 
15

7. 
Five mark example problems  II
Difficulty: hard 
15

8. 
Five mark example problems  III
Difficulty: hard 
15

9. 
Five mark example problems  IV
Difficulty: hard 
10

10. 
Five mark exercise problems  I
Difficulty: hard 
15

11. 
Five mark exercise problems  II
Difficulty: hard 
10

Practice Questions
1. 
Find the largest value
Difficulty: easy 
2

2. 
Find the range of the distribution
Difficulty: easy 
2

3. 
Find the standard deviation
Difficulty: easy 
2

4. 
Find the variance
Difficulty: easy 
2

5. 
Find the range and its coefficient
Difficulty: medium 
2

6. 
Calculate the standard deviation by direct method
Difficulty: medium 
5

7. 
Calculate the standard deviation by mean method
Difficulty: medium 
5

8. 
Calculate the standard deviation by assumed mean method
Difficulty: medium 
5

9. 
Calculate the standard deviation by step deviation method
Difficulty: medium 
5

10. 
Determine the standard deviation using mean method
Difficulty: medium 
5

11. 
Find the standard deviation of 'n' natural numbers
Difficulty: hard 
5

12. 
Determine the standard deviation using assumed mean method
Difficulty: hard 
5

13. 
Find the standard deviation using step deviation method
Difficulty: hard 
5

Key Questions for School Exam Preparation
1. 
Determine the range
Difficulty: easy 
2

2. 
Find the smallest value
Difficulty: easy 
2

3. 
Calculate the standard deviation
Difficulty: hard 
5

4. 
Find the remaining observation
Difficulty: hard 
5
