Question

Select the most appropriate test for this design:

O O

all variables = interval

rank biserial

Spearman's rank order

Pearson's r

point biserial

Answer 1

solution :

Rank biserial and point serial are not useful correlations here as these two are used only when we have dichotomous variable type, but not used for interval data type

spearman’s rank order is not useful here because it is used only when the data is ranked, but it is not used for the interval data type

Pearson r correlation is most useful here because it should be used in the case of interval data

Therefore,

ANSWR : option C

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