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Statistical matter - Coggle Diagram

- - - - Descriptive statistics
        
        Those methods that include the collection, presentation and characterization of a data set in order to appropriately describe the various characteristics of that set.
- - - - It is the set of all the elements that fulfill certain properties and among which you want to study a certain phenomenon (they can be hearths, number of screws produced by a factory in a year, coin tosses, etc.).
    - - It is the subset of the population that is studied and from which conclusions are drawn about the characteristics of the population. The sample must be representative, in the sense that the conclusions obtained must serve the entire population.
    - - Each of the elements of the sample or population (people, screws, hospitals, businesses) and on which the observation will fall.
    - - Each of the characteristics or characteristics of the elements of a population and that vary from one individual to another (salary, eye color, sex, number of children).
      - • Census
        
        It is a study that is done directly on an entire population.
      - • Sampling
        
        It is a study that is done only on a sample of the population. If the sample is representative, the results obtained will be the same or very close to those
  - - - questionnaires
      - samplings
      - censuses
      - observations
      - Graphical Presentation of Data
      - Histograms
        
        Histograms are vertical bar charts in which rectangular bars are constructed on the boundaries of each class. The random variable or phenomenon
      - Polygons
        
        A polygon is a graph that lines the midpoints at the top of the histogram bars.
      - Bar graphs
        
        In the bar graph, each category is described by a bar, the length of which represents the frequency or percentage of observations that fall in
        
        Pie chart
        
        A pie or pie chart is a circle divided into parts that represent the relative frequency or percentage of the different categories.
- - - - It is the average value of an ordered sequence of data.
    - - In a data series, mode is the value that repeats most, the one that appears most frequently. Fashion is not affected by the occurrence of any extreme value. Here is an example.