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Need Answer in details please Q.3 (a) Differentiate the measures of central tendency and dispersions. 8+12 (b) Calculate the Mean Deviation, Variance and Standard Deviation

Need Answer in details please

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Q.3 (a) Differentiate the measures of central tendency and dispersions. 8+12 (b) Calculate the Mean Deviation, Variance and Standard Deviation from the following frequency distribution. C.I 20-39 40-59 60-79 80-99 100-119 120-139 f 11 18 25 30 15 4

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