The Median

The MEDIAN

The median is the value which comes at the mid-point of a set of determine when they are consistent in order. The major receipts of the median, which it shares with the mode, is the event that is unaffected by extreme lashings. The calculation of the median does non require any assumptions about the interval properties of the scale.
A major dis gain of the median is that it does not enter readily into equations and is therefrom more difficult to work with than the esteem. It is also not as stable from sample to sample, which is another disadvantage.

The MEAN

The arithmetic entertain is obtained by dividing the sum of all the slays by the number of sums and it is the most common measure of central tendency.
The major advantage of the mean is that e actually score makes a contri preciselyion to the total, enemy to the median where only one or two score in the centre of the sample count. The second advantage of the mean is that it can be manipulated algebraically, which means we can use the mean in an equation and manipulate it through the normal rules of algebra.
However, it is very sensitive to the presence of extremes scores, and therefore should be used when score values are reasonably close together, which can be determined by inspection.





The RANGE

The range expresses the spreading of scores in a info set, and it is the difference between the maximum and minimal values. The range is the measure of dispersion used for ordinal data and it is the least informative and least stable of all the measures of dispersion.. The advantage of the range is obviously the fact that it is the simplest of all statistics to compute but it is very limited in what it can convey.
Although it tells us the sizing of the space between the top and bottom scores, it does not place anything about how all the other scores are arranged inside that space.

The STANDARD DEVIATION

The measure of dispersion used when we restrain ratio data is known as the standard deviation. It is the...If you motive to get a full essay, order it on our website: Orderessay



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