PDF chapter test

### Theory

 1 Introduction to statistics 2 Collection of data 3 Getting the facts sorted out 4 Measures of central tendency 5 Arithmetic mean - Raw data 6 Arithmetic mean - ungrouped frequency distribution 7 Arithmetic mean - grouped frequency distribution 8 Direct method 9 Assumed mean method 10 Step deviation method 11 A special property of arithmetic mean 12 Mindmap

### Textbook Questions

 1 Multiple choice questions I Difficulty: easy 3 2 Multiple choice questions II Difficulty: easy 2 3 Multiple choice questions III Difficulty: easy 3 4 Two mark example problems I Difficulty: easy 4 5 Two mark example problems II Difficulty: easy 4 6 Two mark exercise problems I Difficulty: easy 4 7 Two mark exercise problems II Difficulty: easy 4 8 Five mark example problems I Difficulty: medium 5 9 Five mark example problems II Difficulty: hard 10 10 Five mark exercise problems I Difficulty: hard 10 11 Five mark exercise problems II Difficulty: hard 10

### Practice Questions

 1 Calculate the mean Difficulty: easy 2 2 Determine the height Difficulty: easy 2 3 Find the sum of deviations Difficulty: easy 2 4 Calculate the mean if each value is decreased Difficulty: easy 2 5 Determine the correct average Difficulty: medium 2 6 Determine the mean Difficulty: medium 5 7 Find the mean using direct method Difficulty: medium 5 8 Calculate the mean using assumed mean method Difficulty: medium 5 9 Find the value of the variable "a" Difficulty: medium 5 10 Determine mean using assumed mean method Difficulty: hard 5 11 Calculate the mean using step deviation method Difficulty: hard 5 12 Find the new arithmetic mean Difficulty: hard 5

### Key Questions for School Exam Preparation

 1 Find the discarded number Difficulty: easy 1 2 Determine the correct mean Difficulty: easy 2

### Teacher manual

 1 Methodical recommendation