different between pearson and spearman correlation

different between pearson and spearman correlation -...

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different between pearson and spearman correlation  The difference between the Pearson correlation and the Spearman correlation is that the  Pearson is most appropriate for measurements taken from an  interval  scale, while the  Spearman is more appropriate for measurements taken from  ordinal  scales. Examples of  interval scales include "temperature in Farenheit" and "length in inches", in which the  individual units (1 deg F, 1 in) are meaningful. Things like "satisfaction scores" tend to of  the ordinal type since while it is clear that "5 happiness" is happier than "3 happiness", it  is not clear whether you could give a meaningful interpretation of "1 unit of happiness".  But when you  add up  many measurements of the ordinal type, which is what you have in  your case, you end up with a measurement which is really neither ordinal nor interval,  and is difficult to interpret. Pearson Product-Moment Correlation Coefficient (Pearson's
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This note was uploaded on 09/25/2011 for the course UNKNOWN 12 taught by Professor 12 during the Spring '11 term at Apex College.

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different between pearson and spearman correlation -...

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