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Measures of Central Tendency and Arithmetic Mean

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

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

1.	Training test Difficulty: easy	9
2.	Training test Difficulty: medium	11

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Methodical recommendation

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