N = 200; she used Pearson Product Momemtum. At the very end her school made her do the whole thing over for not using Associative Hypothesis Testing. Why could she not test with Pearson
Pearson's r is a measure for *linear* association between the variables, Spearman's rho is a measure for a *monoton* asccosiation (i.e. a linear association of the ranks). If the relation is non-linear (curved), r might not be a sensible measure, but rho still is, as long as the relation is monoton.
Pearson's r is a measure for *linear* association between the variables, Spearman's rho is a measure for a *monoton* asccosiation (i.e. a linear association of the ranks). If the relation is non-linear (curved), r might not be a sensible measure, but rho still is, as long as the relation is monoton.
Marilyn, if your questions is regarding the two correlation methods, Jochen has given a good explanation.
But, maybe what they want is not just a correlation between two variables, but a more direct relationship of cause and effect. Thus, maybe what they want her to do is a regression analysis.
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