Question

1) One assumption for using hypothesis testing for Pearson correlation is that one variable should vary equally at each level of the other variable. What is the easiest way to determine if this assumption has been met?

            

1. Calculate the cross-products of the deviation scores; if the result is positive, then the assumption has been met.
2. If the calculation of r is high, then the assumption has been met.
3. Conduct a post-hoc test following the calculation of r.
4. Draw a scatterplot to see if the range of values is equal across all values of the other variables.

2) of the following values of the correlation coefficient indicates the weakest relationship between two variables?

            

1. +0.27
2. –0.32
3. +0.25
4. –0.54

Answer 1

) One assumption for using hypothesis testing for Pearson correlation is that one variable should vary equally at each level of the other variable

Draw a scatterplot to see if the range of values is equal across all values of the other variables.

Hence D is the ans

2) +0.25 of the following values of the correlation coefficient indicates the weakest relationship between two variables

Hence C is the ans

Note-if there is any understanding problem regarding the sum, please feel free to ask any doubt in comment box. THANKS.