STATISTICAL TECHNIQUES AND TOOLS
MEASURE OF ARITHMETIC MEAN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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____ method is adopted when deviations from assumed mean have some common factor.
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Direct
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Assumed Mean
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Step deviation
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None of the above
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Explanation:
Detailed explanation-1: -In other words, the step deviation method is used when the deviations of the class marks from the assumed mean are large and they all have a common factor. This method is also called a change of origin or scale method.
Detailed explanation-2: -Step Deviation Method: Calculating the Mean by using Step Deviation Method. A= The middle value that is assumed as the mean for calculation, ∑i=1nfi= Sum of the frequencies given, can be denoted by N.
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