Regression Model Building: A Case Study Using SPSS

Multiple Regression Analysis of Brain Size and Intelligence

  1. Gender: Male or Female (Male = 1 and Female = 2)
  2. FSIQ: Full Scale IQ scores based on the four Wechsler (1981) subtests
  3. Intelligence Level (1= Below Average, 2 = Average and 3= Above Average).
  4. VIQ: Verbal IQ scores based on the four Wechsler (1981) subtests
  5. PIQ: Performance IQ scores based on the four Wechsler (1981) subtests
  6. Weight: body weight in pounds
  7. Height: height in inches
  8. MRI Count: total pixel Count from the 18 MRI scans (in units of thousands, for example a value of 817 would be equivalent to 817 thousand).

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\[Weight=-117.917+3.899\times Height\]

Mean MRI count

Below Average

785.6

Average

813.4

Above Average

873.6


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