You find a partial report of a study that investigated the relationship between self-esteem and depression. You see they conducted a one-tailed Pearon's r correlation with 52 people, and that the r = -0.25. Answer the following questions based on this result.

1.

Calculate / report the following:

a.Coefficient of determination

b.degrees of freedom

c.critical r value (use the ebook appendix for the critical value and do not round).

(make sure to keep labels a, b, and c!)

a.ANSWER

b.ANSWER

c.ANSWER

2.

Write up the results using complete sentences. Make sure to include the full statistical notation and a decision about the null hypothesis.

ANSWER

3.

State what a researcher would conclude and what is actually true if a Type I error were committed in this scenario. (Note this requires two statements - 1) what the researcher concludes and 2) what is true for the population.)

ANSWER

4.

Imagine a study finds a significant positive relationship between IQ and SAT scores. If a journalist made an error in causality when writing about this relationship, what would they be claiming / concluding based on this scenario (one sentence is sufficient)?

ANSWER

5.

State what a researcher would conclude and what is actually true if a Type II error were committed in regards to a correlational study on IQ and SAT scores. (Note this requires two statements - 1) what the researcher concludes and 2) what is true for the population.)

ANSWER