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PSY 870: Module 7 Problem Set

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PSY 870: Module 7 Problem Set

Optimism and Longevity

A cancer specialist from the Los Angeles County General Hospital (LACGH) rated patient optimism in 20- to 40-year-old male patients with incurable cancer in 1970. In 1990, the researcher examined hospital records to gather the following data:

  • Socioeconomic status (1–7 rating of occupation; higher ratings indicate higher levels of SES)
  • Age in 1970
  • Optimism in 1970 (1–100 rating, higher scores indicate higher levels of optimism)
  • Longevity (years lived after the 1970 diagnosis)

Using the SPSS data file for Module 7 (located in Topic Materials), calculate a simultaneous multiple regression with SES, age, and optimism as the independent variables and longevity as the dependent variable.

  • Do the independent variables correlate statistically significantly and practically with the dependent variable?
  • Is collinearity between the independent variables a concern?
  • What is the R and adjusted R-square for all independent variables entered simultaneously?
  • What variable(s) provide a significant unique contribution(s)?
  • Compose a results section for this statistical analysis.
 
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