1) A rehabilitation counselor used the number of visitors that patients receive
ID: 3220828 • Letter: 1
Question
1) A rehabilitation counselor used the number of visitors that patients receive over the course of a week in the hospital to predict their daily levels of positive mood. The slope of the regression line was 3.24. Which of the following statements is the best interpretation for this finding?
A) For every additional visitor a patient receives, there is an associated increase in positive mood of 3.24.
B) Every visitor a patient receives causes an increase in their daily level of positive mood.
C) For every 1-point increase in positive mood, there is an associated increase in the number of visitors.
D) The smallest score of positive daily mood is 3.24, and it increases by 1 point for every additional visitor a patient receives.
2) If Ashley wants to test for GPA differences among first-, second-, third-, and fourth-year college students, you should advise her to use which of the following difference tests?
A) repeated-measures ANOVA
B) between-subjects, two-way ANOVA
C) between-subjects, one-way ANOVA
D) chi-square test of independence
3) Krista wants to compare males and females on smoking behavior. If smoking is measured as the number of cigarettes smoked each day, what difference test should Krista use to determine if males and females differ on smoking behavior?
A) paired-samples t test
B) chi-square test of independence
C) independent-samples t test
D) Mann-Whitney U test
Explanation / Answer
Answer 1:
Option A is correct.
Since the slope of the regression line is 3.24 which is positive. For every additional visitor a patient receives, there is an associated increase in positive mood of 3.24.
Answer 2:
Option D is correct.
Chi-square test of independence is used to determine if there is a significant relationship between two nominal (categorical) variables
Answer 3:
Option D is correct.
Mann-Whitney U test is used when the data is ordinal or when the assumptions of the t-test are not met.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.