Statistics descriptive

Statistics descriptive

1. population and samples

   • the population is a set of elements with a certain characteristic and the sample small part of it

2. variable and attribute

   • allows to classify individuals of the population

3. measurement scales

   • nominal scale
     • classified as nominal and cannot be set a reference source
   • ordinal scale
     • origin can be set
   • scale quantitative
     • contains unit of measure with which to operate mathematically

4. types frequency

   • variable x
     • overall frequency
       • Absoluta
         • inidica el numero de veces que se repite un determinado valor
       • numero de observaciones
     • take note of the values