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Topic: ARITHMETIC MEANclass: 9
Let’s start module
Programmed Instructional material
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Objectives
At the end of this module you will be able to-To know about arithmetic meanTo know about the arithmetic mean of a
variable from raw dataTo know about the importance of arithmetic
mean
Let’s start module
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ARITHMETIC MEAN
• The term “arithmetic mean” is preferred in some contexts in mathematics and statistic because it helps distinguish it from other means , such as the geometric mean and the harmonic mean.
• The arithmetic mean is used frequently in fields such as economics , sociology and history, and it is used in almost every academic field to some extent.
Lets answer some questions
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• For example; per capita income is the arithmetic average income of a nations population.
• The arithmetic mean is defined as being equal to the sum of the numerical values of each and every observation divided by the total number of observation.
• MEAN=
Lets answer some questions
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Q:1 Which term preferred in some contexts in mathematics and statistics?
: Geometric mean
: Arithmetic mean
: Harmonic mean
B
C
A
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Hint!
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Hint!
Sum of all observation Total no. of observation
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Q:2 The is used frequently in fields such as economics, sociology and history?
: Arithmetic mean
: Integers
: Trigonometry
B
C
A
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Hint!
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Hint!
Sum of the numerical values of each and every observation divided by the total number of observation.
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Q:3 Arithmetic mean is used in almost every fields to some extent.
: Non- academic
: Science
: Academic
B
C
A
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Hint!
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Hint!
Non – academic : dance, games, music etc.Science: practical, lab etc.Academic : class room, tables , chairs etc.
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Q:4 Which income is the arithmetic average income of a nations population?
: Per capita
: Annual
: Total
B
C
A
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Hint!
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Hint!
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Q:5 Arithmetic Mean=
A
B
C
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Hint!
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Hint!
Example: 2+4+3+5 4 = 14 4 = 3.5
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Congratulations you have Scored 50 marks!
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