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Methodical recommendation:
Theory
| Number | Name | Description |
|---|---|---|
| 1. | Introduction to statistics | Let us learn about the concept of statistics. |
| 2. | Collection of data | Let us learn about the concept of collection of data in statistics. |
| 3. | Getting the facts sorted out | Let us learn how to arrange the data. |
| 4. | Measures of central tendency | Let us learn the concept of measures of central tendency. |
| 5. | Arithmetic mean - Raw data | Let us learn about the concept of arithmetic mean and assumed mean. |
| 6. | Arithmetic mean - ungrouped frequency distribution | Let us learn the concept of finding the arithmetic mean of ungrouped frequency distribution. |
| 7. | Arithmetic mean - grouped frequency distribution | Let us learn the concept of finding arithmetic mean of grouped frequency distribution. |
| 8. | Direct method | Let us learn how to find the mean of grouped frequency distribution using direct method. |
| 9. | Assumed mean method | Let us learn the concept of finding the mean using assumed mean method of grouped frequency distribution. |
| 10. | Step deviation method | Let us learn how to find the mean of grouped frequency distribution using step deviaton method. |
| 11. | A special property of arithmetic mean | Let us learn the special property of the arithmetic mean. |
| 12. | Mindmap | Learn the mindmap of the concept of measures of central tendency and arithmetic mean. |
Textbook Questions
| Number | Name | Type | Difficulty | Marks | Description |
|---|---|---|---|---|---|
| 1. | Multiple choice questions I | Other | easy | 3 m. | Select the suitable choice for the given questions. |
| 2. | Multiple choice questions II | Other | easy | 2 m. | Select the suitable choice for the given questions. |
| 3. | Multiple choice questions III | Other | easy | 3 m. | Select the suitable choice for the given questions. |
| 4. | Two mark example problems I | Other | easy | 4 m. | Check your understanding skills in the concept of special property of arithmetic mean. |
| 5. | Two mark example problems II | Other | easy | 4 m. | Practice a problem to find the mean of the given values. |
| 6. | Two mark exercise problems I | Other | easy | 4 m. | Check your understanding skills in the concept of arithmetic mean. |
| 7. | Two mark exercise problems II | Other | easy | 4 m. | Try to answer the given questions. |
| 8. | Five mark example problems I | Other | medium | 5 m. | Try to answer the given questions. |
| 9. | Five mark example problems II | Other | hard | 10 m. | Try to find the mean age of the given data. |
| 10. | Five mark exercise problems I | Other | hard | 10 m. | Try to find the mean using direct method. |
| 11. | Five mark exercise problems II | Other | hard | 10 m. | Practice a problem to find the mean using assumed mean method and step deviation method. |
Practice Questions
| Number | Name | Type | Difficulty | Marks | Description |
|---|---|---|---|---|---|
| 1. | Calculate the mean | Other | easy | 2 m. | Practice a problem to find the mean of the given set of data. |
| 2. | Determine the height | Other | easy | 2 m. | Practice a problem to determine the height of a student using the mean. |
| 3. | Find the sum of deviations | Other | easy | 2 m. | Try to solve the problem by applying the property of arithmetic mean. |
| 4. | Calculate the mean if each value is decreased | Other | easy | 2 m. | Practice a problem to find the mean by applying the property of arithmetic mean. |
| 5. | Determine the correct average | Other | medium | 2 m. | Try to find the correct mean of the given data. |
| 6. | Determine the mean | Other | medium | 5 m. | Check your understanding skills in the concept of finding the mean of ungrouped frequency distribution. |
| 7. | Find the mean using direct method | Other | medium | 5 m. | Try to find the mean of the grouped frequency distribution using direct method. |
| 8. | Calculate the mean using assumed mean method | Other | medium | 5 m. | Try to find the mean of the ungrouped frequency distribution using assumed mean method. |
| 9. | Find the value of the variable "a" | Other | medium | 5 m. | Practice a problem to find the value of the variable "a". |
| 10. | Determine mean using assumed mean method | Other | hard | 5 m. | Check your understanding skills in the concept of finding mean using assumed mean method. |
| 11. | Calculate the mean using step deviation method | Other | hard | 5 m. | Check your understanding skills in the concept of finding mean using step deviation method. |
| 12. | Find the new arithmetic mean | Other | hard | 5 m. | Check your understanding skills in the concept of finding mean using the properties of arithmetic mean. |
Key Questions for School Exam Preparation
| Number | Name | Type | Difficulty | Marks | Description |
|---|---|---|---|---|---|
| 1. | Find the discarded number | Other | easy | 1 m. | Select the suitable choice for the given question. |
| 2. | Determine the correct mean | Other | easy | 2 m. | Practice a problem to find the mean of the given values. |
Questions for Teacher Use
| Number | Name | Type | Difficulty | Marks | Description |
|---|---|---|---|---|---|
| 1. | Choose the correct answer | Other | easy | 3 m. | Select the suitable choice for the given questions. |
| 2. | Determine the mean and verify it | Other | medium | 5 m. | Check your understanding skills in the concept of finding mean using ungrouped data. |
| 3. | Find the mean and verify it by different methods of solving grouped data | Other | hard | 5 m. | Check your understanding skills in the concept of finding the mean using grouped frequency distribution table. |
| 4. | The arithmetic mean | Other | easy | 1 m. | Practice a problem to find the mean of the given values. |
| 5. | The sum of deviations | Other | easy | 1 m. | Check your understanding skills in the concept of special property of arithmetic mean. |
| 6. | Mean of natural numbers | Other | easy | 2 m. | Select the suitable choice for the given questions. |
Periodic assessments
| Number | Name | Recomended time: | Difficulty | Marks | Description |
|---|---|---|---|---|---|
| 1. | Homework I | 00:15:00 | easy | 9 m. | |
| 2. | Homework II | 00:15:00 | easy | 9 m. | |
| 3. | Homework III | 00:20:00 | medium | 14 m. | |
| 4. | Homework IV | 00:25:00 | medium | 18 m. | |
| 5. | Revision test I | 00:30:00 | hard | 20 m. | |
| 6. | Revision test II | 00:30:00 | hard | 20 m. | |
| 7. | Revision test III | 00:40:00 | hard | 30 m. | |
| 8. | Periodic Assessment - 3 | 00:10:00 | medium | 6 m. | PA3 |
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