Please enable JavaScript.

Coggle requires JavaScript to display documents.

Applied statistics - Coggle Diagram

- - - - History
        
        Babylonians (3000 A.C.)
        
        Egyptians (siglo XXXI A.C.)
        
        The Bible (Numeros y Cronicas)
        
        China (2000 A.C.)
        
        Classical Greeks (594 A.C.)
      - Application to statistics
        
        It is an indispensable tool for decision making in many sciences and human activities.
        
        Human Geography
        
        Economy
        
        Psychology
        
        Sociology
      - Statistics Divisions
        
        is divided into
        
        Descriptive statistics
        
        Methods that include the collection, presentation and characterization of a data set.
        
        Inductive statistics
        
        Method that makes it possible to estimate a characteristic of a population.
    - - They tell us how far (or how far) away the data from the center (often imaginary) is from a set.
        
        Range
        
        It is the difference between the highest and lowest observation in a data series
        
        Its formula is:
        
        r = X - x
      - Variance and standard deviation
        
        Variance
        
        It is the average of the square differences between each of the observations of a series of daros and the average.
        
        Deviation from the state
        
        It is simply the square root of the variance. It measures the average dispersion around the mean.
      - Coefficient of Variation
        
        This coefficient only serves to compare the dispersions of variables corresponding to ratio scales.
    - - They are those that indicate the center of a data set.
        
        They are:
        
        Medium
        
        Concept
        
        It is the mean value of an ordered sequence of data, it is affected by the number of observations, not by the magnitude of either end.
        
        Fashion
        
        Concept
        
        It is a series of data, fashion is the value that is repeated the most, the one that appears the most frequently. It is not affected by the occurrence of any extreme value
        
        Mean or average
        
        Concept
        
        It is calculated by adding up all the data and then dividing the total by the number of data involved,
    - - Basic concepts of:
        
        Individual
        
        Each of the elements of the sample or population
        
        Variable
        
        Each of the features or characteristics of the elements of a population and which vary from one individual to another
        
        Sample
        
        A subset of the population being studied from which conclusions are drawn about the characteristics of the population.
        
        Census
        
        It is a study that is done directly to an entire population
        
        Population
        
        Set of all the elements that fulfill certain properties and among which it is desired to study a certain phenomenon
        
        Sampling
        
        It is a study that is made only to a sample of the population.
      - Tables
        
        Data can be collected in several ways:
        
        Sampling
        
        Census
        
        Questionnaires
        
        Comments
        
        Frequency
        
        It is the number of times the same value is repeated
        
        Absolute Frequency
        
        It is the table with which you can further summarize the data and facilitate its interpretation
        
        Relative frequency
        
        The number of times each value appeared is known but in relation to the other values
      - Graphical data presentation-PART A
        
        Histogram
        
        Diagramas de barras verticales en los que se construyen barras recrtangulares en los limites de cada clase
        
        Polygons
        
        It is a graph that joins the lines to the midpoints at the top of the histogram bars
      - Graphical data presentation-PART B
        
        Bar Graphics
        
        It is described by a bar, whose length represents the frequency or percentage of observations
        
        Caracterisiticas
        
        All bars must be the same width
        
        The axes must be named
        
        The zero point or origin must be indicated
        
        Pie charts
        
        It is a circle divided into parts that represent the relative frequency or percentage of the different categories.