STATISTICS CONCEPT AND FORMULAS AND MORE 2

STATISTICS CONCEPT AND FORMULAS AND MORE 2

1. RANK

   • This represents the difference between the maximum value and the minimum value of the data set whereby we shows how distributed the values are in a series
     • the formula is: Range = maximum - the minimum of table data
       • 7/5000 example
   • rank means, medium
     • It is calculated by finding the maximum + minimum value divided into 2

2. Number of classes

   • Range used to divide the set of possible values numeric when working with large amounts of data
     • formula
       • c = 1 + log2 M where M is the sample size can be passed to base 10 of the following formula c = 1 + 3.322 * log N Being N the total data number

3. Measures of central tendency

   • It allows us to identify and locate the value point at which the central point data is gathered
   • 75/5000 Methods to locate the center point of the grouped and unbundled data
     • Media
       • It is the sum of all data divided by the number of data
         • FORMULAS
           • This formula is only applicable if the data they are ungrouped
             • ejemplos
       • Arithmetic average weighted
         • Used for the data that they are grouped
           • FORMULAS AND EXAMPLES
     • Moda
       • It is the most repeated value within the data
       • It can be called bimodal when repeat 2 values and when they are more than two data is called multimodal
     • Median
       • The value that is identified is identified is in the center of the data that is the value that is exactly in the middle of data
         • formulas and example
       • It is symbolized with acronym Me
   • concepts important
     • the measures of central tendency we allow you to identify more values representative
       • we can divide into
         • the average is the average of the data informs us the value that each individual will get if they are distributed values in equal parts
         • the median is the value that separates the data in equal parts and divide them into 2
         • fashion is the number or the most repeated data

4. Es la rama de las matematicas para reunir, organizar, presentar, analizar e interpretar los datos numericos

   • Descriptive statistics: collection data grouping and presentation
   • Inferential statistics methods that do possible to get information about the population
     • Stem diagram and leaves
   • Joint population of all the individuals
   • Sample subset of the population is sampling
   • Value data of the variable
   • Frequency is the number of times that the value is repeated
   • Relative frequency relationship between the number of times the co value is repeated with respect to the total
   • Frequency percentage

5. Correlation coefficients between variables

6. fashion, medium, median

   • Fashion the first thing to do is the interval is to identify the modal interval
   • to calculate it median first we have to calculate the average arithmetic
   • mean is used to calculate the mean of the values

7. Variance

   • It allows us to identify the difference on average between each one of the values with respect to the half
     • this average was calculated by raising each of the squared differences, adding and dividing them for the amount of the difference

8. deviation

   • Desviaccion nos da comun resultado la diferencia que hay entre los datos y la media
     • to find it, just find the square root of the variance
       • first
         • second
           • the standard variation is

9. What are the measures of position

   • are values of the variable that we report the place that occupies a data within a data set organized
     • Cuartiles
       • They are measures that divide us spell in 4 equal parts
     • DECILES
       • the deciles divide the values in 10 equal parts
     • Porcentiles
       • these divide them into 100 parts equals

10. GRAPHICS

    • The graphics are used to illustrate and present a set of interrelated data so That facilitates your understanding, comparison and analysis. The graphics are used to illustrate and present a set of interrelated data so to facilitate your understanding, comparison and analysis
      • TYPES GRAPHICS
        • Bar graphic. The best known and used of all types of graphics is the graphic or bar chart. ... Pie chart or by sectors. ... histogram. ... Line chart. ... Scatter plot. ... Box and mustache chart. ... Area chart. ... pictogram

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