Advance Statistical Method CIT 6093 ARKANSAS STATE UNIVERSITY Department of Computer & Information Technology Fall

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# Advance Statistical Method CIT 6093 ARKANSAS STATE UNIVERSITY Department of Computer & Information Technology Fall - PowerPoint PPT Presentation

Dr. Ahmad Syamil. Advance Statistical Method CIT 6093 ARKANSAS STATE UNIVERSITY Department of Computer & Information Technology Fall 2005. Chapter Two. OBJECTIVES. MULTIVARIATE STATISTICAL TECHNIQUES TYPES OF MODEL TYPES OF MEASURING SCALES RELIABILITY OF MEASUREMENT

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## Advance Statistical Method CIT 6093 ARKANSAS STATE UNIVERSITY Department of Computer & Information Technology Fall

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1. Dr. Ahmad Syamil Advance Statistical Method CIT 6093 ARKANSAS STATE UNIVERSITY Department of Computer & Information Technology Fall 2005 Chapter Two

2. OBJECTIVES • MULTIVARIATE STATISTICAL TECHNIQUES • TYPES OF MODEL • TYPES OF MEASURING SCALES • RELIABILITY OF MEASUREMENT • VALIDITY OF MEASUREMENT

3. MULTIVARIATE STATISTICAL TECHNIQUES Variables: It is a Construct that is Free to Vary in a Identified Way Constants: It does not vary Relationships: Symbols that Shows How Variables and Constants Effect from One to Another

4. Characteristic of Models Equations than Inequalities Linear than Nonlinear Additive Compensatory TYPES OF MODEL Bi variate Model: Y = a + bX Cont’d…

5. TYPES OF MODEL Deterministic Model Precise Relationship Among all variables Probabilistic Model Overall Form of Relationships Among Variables

6. TYPES OF MEASURING SCALES Four Basic Types of Measuring Scales … • Nominal • Ordinal • Interval • Ratio Nonparametric Statistics Parametric Statistics Cont’d…

7. TYPES OF MEASURING SCALES Nominal Scales Numbers are Identification Purpose Only Ordinal Scales Numbers in a Sequence Based on Order of Magnitude Interval Scales Differences in Amount or Degree Between Adjacent Numbers are Approximately Equal Throughout the Scale Ratio Scales Equal Intervals Between Adjacent Numbers But Also have Zero Points Cont’d…

8. TYPES OF MEASURING SCALES Importance of Scale Type… • Interpreting Numbers • Statistical Analysis

9. RELIABILITY OF MEASUREMENT Commonly Used Methods … • Test-retest • Spit-half • Coefficient Alfa

10. VALIDITY OF MEASUREMENT • Concurrent Validity • Predictive Validity • Face Validity • Construct Validity