Problem Set 2: Linear Regression Analysis

Research Scenario: A crisis counselor is interested in whether the number of days spent in a refugee camp before resettlement predicts trauma levels in recently resettled refugees. He interviews 15 refugees to determine how many days they spent in a refugee camp before being resettled, then administers a translated version of the Harvard Trauma Questionnaire Part IV (HTQ Part 4), where a higher score indicates higher levels of trauma (Mollica et al., 1992). He compiles the information in the table below.

Using this table, enter the data into a new SPSS data file and run a linear regression analysis to test whether days in a refugee camp predict HTQ-4 scores. Create a scatterplot with a regression line to show the relationship between the variables.

Days Spent in Refugee Camp

HTQ Part 4 Score

12

0.4

73

1.1

60

0.9

105

2.3

98

1.7

76

0.3

89

0.7

173

2.6

203

3.0

138

1.9

215

2.5

71

0.7

67

1.2

63

1.8

184

2.9