Midterm Exam Statistics

Midterm Exam Statistics

1. 3.2

   • Population standard Deviation
     • Population Variance
   • Sample standard deviation
     • Sample Variance
   • Coefficient of variation
   • Empirical Rule
     • 1) Approximately 68% of the data values lie within One Standard Deviation of the mean.  2) Approximately 95% of the data values lie within Two Standard Deviations of the mean. 3) Approximately 99.7% of the data values lie within three standard deviations of the mean.
     • 68%- within 1 Standard Deviation
     • 95% Within 2 Standard Deviations
     • 99.7% WIthin 3 Standard Deviations

2. 3.3

   • Five-Number Summary
   • Standard Score for a Population
   • Standard Score for a Sample

3. 4.1

   • Sample Space
     • the set of all possible outcomes for a given probability experiment 
   • Event
     • a subset of outcomes from the sample space
   • Experiment Probability
     • (Empirical Probability) Uses the outcomes obtained by repeatedly performing an experiment to calculate the probability.
   • Classical Probabiility
     • (Theoretical Probability) is the most precise type of probability and can only be calculated when all possible outcomes in the sample space are known and equally likely to occur.
   • Subjunctive Probabiltiy
     • Educated guess regarding the chance that an event will occur.

4. 4.2

5. 4.3

6. 4.4

7. 5.1

8. 5.2

9. 5.3

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