STATISTICS

STATISTICS

1. Popuulation

   • Total data. Ex: total number of automoviles in tec

2. Sample

   • Example: Teachers automoviles in tec

3. Variable

   • quantitative
     • discrete
       • example: Number of students in class
     • Continuous
       • example:A person's height
   • qualitative

4. parameter

5. Measurement scales

   • Nominal
     • property of identity
   • Ordinal
     • Property of identity and magnitude
   • interval
     • Property of identity, magnitude and equal intervals
   • ratio
     • properties of identity, magnitude, equal intervals and a minimum value of zero

6. Sampling methods

   • NO-Probability samples
     • voluntarie
     • convenience
   • Probability Samples
     • simple random
     • sistematic random
     • stratified
     • cluster

7. Visual displays of data

   • Frecuency distribution
     • frecuency
     • relative frecuency
   • Histogram
   • Bar graph
   • Circle graph
   • Line graph
   • Stem and leaf

8. Measure of central tendency

   • mode
   • median
   • mean

9. Measures of dispersions

   • Chevyshev's Theorem
   • range
   • standard derivation

10. X-ctiles

    • Z-score
    • percentiles
    • deciles
    • quartiles

Bilder und Dateien der Mindmap