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Assignment Help in Assumption Of Pearson An Correlation


The Pearson’s coefficient of correlation rests on two assumptions. First is that a large number of independent contributory causes are operating in each of the two series correlated so as to produce normal or probability distribution? We know that such causes always operate in chance phenomena like tossing of coin or throw of a dice. They also operate in other types of data.

The second assumption is that the forces so operating are not independent of each other but are related in a casual fashion. The height of an individual during the last ten years may show an upward trend and" his income during this period may also show a similar tendency but there cannot be any correlation between the two series because the forces affecting the two series are entirely disparate with each other.

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