The deviation about the mean of a single number is always zero.
The mean deviation of any set of numbers is always zero and so the absolute mean deviation is also always zero.
If there is zero deviation all the observations are 50.
What is mean deviation and why is quartile deviation better than mean deviation?
None.The mean of a single number is itself.Therefore deviation from the mean = 0Therefore absolute deviation = 0Therefore mean absolute deviation = 0None.The mean of a single number is itself.Therefore deviation from the mean = 0Therefore absolute deviation = 0Therefore mean absolute deviation = 0None.The mean of a single number is itself.Therefore deviation from the mean = 0Therefore absolute deviation = 0Therefore mean absolute deviation = 0None.The mean of a single number is itself.Therefore deviation from the mean = 0Therefore absolute deviation = 0Therefore mean absolute deviation = 0
No. The mean deviation is 0. Always.
The mean average deviation is the same as the mean deviation (or the average deviation) and they are, by definition, 0.
mean deviation =(4/5)quartile deviation
There is no statistical term such as "deviation mean".
Information is not sufficient to find mean deviation and standard deviation.
Mean deviation is NEVER used.
The first set would have most data points very close to 50 while in the second set they would be much further away.
The mean deviation from the median is equal to the mean minus the median.