The Median

The MEDIAN The median(a) is the value which comes at the mid-point of a prepare of determine when they are consistent in order. The major taxation 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 thus more difficult to work with than the esteem. It is also not as stable from sample to sample, which is another dis expediency. The MEAN The arithmetic remember is obtained by dividing the sum of all the slays by the number of sums and it is the around common measure of central tendency. The major advantage of the imagine 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 st inker 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 cutting to the presence of extremes scores, and therefore should be apply when score set are reasonably close together, which can be obdurate by inspection.

The RANGE The range expresses the spreading of scores in a info set, and it is the difference between the maximum and negligible values. The range is the measure of dispersion used for ordinal entropy 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 st atistics to compute but it is very limited ! in what it can convey. Although it tells us the size of the space between the top and bottom scores, it does not orient anything about how all the other scores are lay inside that space. The STANDARD DEVIATION The measure of dispersion used when we restrain ratio data is known as the pattern deviation. It is the...If you motive to get a full essay, order it on our website: OrderEssay.net

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