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Statistics & SPSS Review. Fall 2009. Types of Measures / Variables. Nominal / categorical Gender, major, blood type, eye color Ordinal Rank-order of favorite films; Likert scales? Interval / scale Time, money, age, GPA. Main Analysis Techniques. Main Analysis Techniques.

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Types of measures variables
Types of Measures / Variables

  • Nominal / categorical

    • Gender, major, blood type, eye color

  • Ordinal

    • Rank-order of favorite films; Likert scales?

  • Interval / scale

    • Time, money, age, GPA








Spss t test output1
SPSS t-test Output

1. Read means

3. Read p value

2. Read Levene’s Test






Variance
Variance

 x i - Mean )2

Variance = s2 = -----------------------

N

Standard Deviation = s =  variance


Statistics spss review

Regression line

W = 3.3 H - 73



Regression coefficients
Regression Coefficients

Sentence = -3.5 G.P.A. + 18





Correlation1
Correlation

Interpreting r as r2

r = -.22 r2 = .05

G.P.A. “explains” 5% of variance in SENTENCE length