STA301 Statistics and Probability GDB Solution Fall 2012

“It has been said “less the variability exist, the more an average is representative of a set of data”. Comment on the meaning of statement”. Solution: The extent to which data points in a statistical distribution or data set diverge from the average or mean value. Variability also refers to the extent to which these data points differ from each other. There are four commonly used measures of variability: range, mean, variance and standard deviation. if data has

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less variability it means data will not have extreme values, so average will not be affacted, it will represent the data more affective. The extent to which data points in a statistical distribution or data set diverge from the average or mean value. Variability also refers to the extent to which these data points differ from each other. There are four commonly used measures of variability: range, mean, variance and standard deviation. if data have less variability then it means that data will not have extreme values so avarage will not be affected so it will represent the data more affectively

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