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The following figures are the heights in cms of 7 children chosen at random:
64, 59, 67,69,65,70,68
Calculate the simple arithmetic mean of the heights by- direct method, short cut method and step deviation method.

Question 4

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The following figure as at the height in centimetre of 7 children chosen at random 64 5967 6965 7068 calculate the simple Arithmetic mean of the height by direct method shortcut method step deviation method
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Question 4 step deviation method doubt please explain

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The following figure as at the height in centimetre of 7 children chosen at random 64 5967 6965 7068 calculate the simple Arithmetic mean of the height by direct method shortcut method step deviation method
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