DESCRIPTIVE STATISTICS

DESCRIPTIVE STATISTICS

1. Basic definitions

   • Variable
     • Examples
       • Values for these variables
       • Canadian “voting preferences,”
     • Types of Variables
       • Category Variables
       • Quantity Variables
       • Why should we be concerned with the type of variable?

2. Observation

3. Case

4. ·

   • Measures of Central Tendency
     • Mode
     • Median
     • Mean
     • Example

5. Variance

6. Standard Deviation

7. Range

8. Ignoring Dispersion

9. Distribution

   • empirical distributions
   • theoretical distributions
   • Histograms
   • Bar Charts

10. Theoretical Distributions

    • Normal Distribution

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