Question

Under what circumstances is the Spearman's correlation used?

• A. When variables consists of ranks (i.e., are measured on an ordinal scale).

• B. When there is a linear relationship between variables.

• C. When there is a curvilinear relationship between variables.

Which of the following best describes the Pearson correlation between X and Y variables based on the scores presented in the table below from a sample n = 5?

(Hint: if you have difficulty in answering this question by examining the scores in the table than make a scatter plot to see the shape of the relationship between the X and Y variables)

X    Y

5    4

6    7

8    9

9     8

11 12

• A. a positive correlation

• B. a negative correlation

• C. no correlation (i.e.,a correlation close to zero)

• D. When one variable is dichotomous and the other consists of regular, numerical scores.

• E. A & C

Researchers examined the relationship between social playtime and emotional intelligence in a sample of n = 27 children and found the Pearson's r = 0.36. Based on this outcome, what is the conclusion from this study?

• A. there is a significant positive relationship between these variables with both, p < .05 and p < .01.

• B. there is a significant positive relationship between these variables with p < .05 but not with p < .01.

• C. there is no significant positive relationship between these variables with either, p < .05 and p < .01.

• D. there is a significant positive relationship between these variables with p < .01 but not with p < .05.

Answer 1

1.option A true.

spearman rank correlation is a non parametric test that is used to measure the degree of association between two variables. This is widely used if there scale is ordinal.

2. Option A true

3. Option B true