Question

Please give a 2-3 sentence response for each case below.

1. A researcher studied the level of depression experienced over a 3-week period by 30 people taking an antidepressant. In an article describing the results of the study, the researcher reports, “The mean level of depression was 8.46 (SD = 1.18).” Interpret these findings.

2. Prior to the start of the academic year, Dr. Hill reviewed the placement test results of the students in her statistics class. She found that the standard deviation of the students’ scores on the statistics pretest was exactly 0.00. What does this tell you? Explain.

Answer 1

1.The mean level of depression was 8.46 with standard deviation is 1.18.This shows that level of depression in those 30 people do not vary too much.They are almost facing same level of depression around 8.46.

2. As standard deviation of placements test results is zero.It means all students scored same marks say x out of 100 in the statistics test.