Chapter 7 using multivariate statistics p173
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Chapter 7 Using Multivariate Statistics P173. Multiple Regression Multiple Correlation What’s the difference between regression and correlation? Validity Generalization. COMPENSATORY PREDICTION MODELS. Regression Equations Y = a + b 1 X 1 + b 2 X 2

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Chapter 7 Using Multivariate Statistics P173

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Chapter 7 using multivariate statistics p173

Chapter 7 Using Multivariate Statistics P173

  • Multiple Regression

  • Multiple Correlation

    • What’s the difference between regression and correlation?

  • Validity Generalization

Chap 7 Multivariate Statistics


Compensatory prediction models

COMPENSATORY PREDICTION MODELS

  • Regression Equations

    • Y = a + b1X1 + b2X2

    • what’s the difference between b and β weights?

    • Why use one or the other?

  • Multiple Correlation

    • How are the correlations among the predictors related to the multiple R?

    • Would you want high correlations among predictors?

  • Suppressors and Moderator Variables

    • Examples of suppressor variables

    • Suppressor variables explained

    • Suppressors

      • How could reading ability act as a suppressor for security guard performance?

    • Moderators

      • How could social skills moderate the conscientiousness-performance relationship?

  • Other Additive Composites

    • Unit weighting is usually sufficient

    • Could you add veterans’ preference or religious preference?

Chap 7 Multivariate Statistics


Noncompensatory predition models

NONCOMPENSATORY PREDITION MODELS

  • Multiple Cutoff Models

    • Two situations warrant it:

      • 1. vital trait

      • 2. if variance is too low (small) to yield sig r.

    • What can happen if cutoffs are all very low?

    • What can happen if cutoffs are all very high?

  • Sequential Hurdles

    • When could this be useful?

Chap 7 Multivariate Statistics


Replication and cross validation

REPLICATION AND CROSS-VALIDATION

  • What IS cross validation?

  • Why is it necessary?

Chap 7 Multivariate Statistics


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