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Measures of Central Tendency (Mean (Properties of Mean (Uniqueness,…
Measures of Central Tendency
Mean
Arithmetic Mean
Properties of Mean
Uniqueness
Simplicity
Extreme Value have influence
Median
Mode
useful for describing qualitative data
Skewness
Data distributions may be classified on the basis of whether they are symmetric or asymmetric
Symmetric
Mirror right half of histogram
Negatively skewed
Mean < mode
value of skewness < 0
Asymmetric
Not mirror
positively skewed
if its mean > mode
value of skewness > 0