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Welcome to Introductory SPSS Workshop

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Welcome to Introductory SPSS Workshop. Dr. Satyendra Singh Director, Centre for Emerging Markets Professor, Marketing and International Business Editor, International Journal of Business and Emerging Markets [email protected] www.uwinnipeg.ca/~ssingh5. 2. Outline. Scales

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slide1

Welcome to Introductory SPSS Workshop

  • Dr. Satyendra Singh
  • Director, Centre for Emerging Markets
  • Professor, Marketing and International Business
  • Editor, International Journal of Business and Emerging Markets
  • [email protected]
  • www.uwinnipeg.ca/~ssingh5
slide2

2

Outline

  • Scales
  • Coding and Input
    • Skewness (+ve/-ve), Outliers
  • Statistical Tests
    • Descriptive, ANOVA, T-test, X2, Correlation, and Regression
  • Hands-on Exercises
  • Case Study
slide3

3

Scales

  • Ratio (real)
    • 0 0
  • Interval (equal)
    • 0  Re. point
  • Ordinal (ranked)
    • How much?! Likert , 7-pt. scale
  • Nominal (Categorical)
slide4

4

Coding and Input

  • Variables  Dep. Var. or Ind. Var.
  • All qualitative info  #s
  • #s  Normal distribution curve
  • If not  Skewness
    • +ve skewness, mean > median
    • -ve skewness, mean < median
  • Treatment of outliers
slide5

5

Statistical Test: Descriptive

  • Explore data
    • Mean
    • Median
    • Frequency
    • Normality
    • Integrity
  • Graph
slide6

6

Statistical Test: ANOVA

  • Impact of IV (with groups) on DV
  • Homogeneity within groups
  • DV  Scale
  • IV  Nominal
    • Gender
      • Male
      • Female
slide7

7

Statistical Test: T-test

  • Difference
    • b/w 2 groups
    • Against a benchmark
  • Groups
    • Independent
    • Related
  • Variables
    • Ratio, Ordinal?
slide8

8

Statistical Test: X2

  • Difference b/w 2 or more variables
  • Variables  Nominal
  • If Scale, transform it to Nominal
  • Correlation
    • Pearson if Scale
    • Spearman if Ordinal
    • Tou if Nominal
slide9

9

Statistical Test: Regression

  • Impact of several IVs on DV
  • Homogeneity within groups
  • DV  Scale
  • IV  Scale preferable
  • R2 (Variance Explained) >.3?
  • VIF (Variation Inflation Factor) < 5-10?
slide10

10

Hands-on Exercise…

What is the mean, median? Is this data normal?

$60,000

$65,000

$70,000

$80,000

$275,000

DESCRIPTIVEFREQUENCYCHART

DESCRIPTIVEEXPLORENORMALITY

slide11

11

Hands-on Exercise

Age education

mom father birth wt gender smoke mom father

1 27 29 2 2.53 Male Yes 2 7

2 21 26 3 2.49 Male Yes 4 5

3 23 23 1 1.75 Female No 6 4

4 37 36 6 1.70 Male No 4 8

5 31 21 2 2.87 Male No 14 3

6 21 27 1 2.67 Female No 0 1

7 16 18 1 3.41 Female Yes 0 3

8 19 24 1 3.20 Male No 8 5

9 22 23 2 2.80 Male Yes 5 5

10….

11…

12…

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