Statistical inference

Statistical inference

1. Distribution Type

   • Normal
   • Ji Square
   • T student
   • F

2. Hypothesis Testing

   • Null Hypothesis
   • Alternative hypothesis
   • Rejection Criterion
   • Statistical Test
     • Bilaterla hypothesis
     • Unilateral hypothesis

3. Estimation

   • Punctual
     • Using for estimate parameters of population
       • Average
       • Proportion of defects (%)
       • Variance
     • How exactly is my punctual estimation?
       • Standard Error
   • By Interval
     • Confidence Interval
       • Average
       • Variance
       • Proportion of defects (%)
       • Recomendation: Do before
         • Descriptive Analisys of Data
       • The amplitud of this depends on:
         • People
           • Variance
           • Level of confidence (%)
         • Size of the Sample

4. Population

   • Finite
     • It almost doesn´t exist
   • Infinite
     • Process with continues flow
     • Masive Process

5. Statistical parameters

   • Mean
   • Standard Deviation
   • Proportion of defects (%)

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