statistics and probabilities

statistics and probabilities

1. number of classes

   • range used to analize different numerical values when working with large amounts of data
     • following this the graphics are born
       • se utilizan para graficar y relacionar varios datos entre si de manera que facilita su comprension comparacion y analisis
         • types of graphics
           • bar chatspie chart or pie chart graph of bar
       • it is also calculated
         • medium medium mode
     • formulate c=1 +log2 when m can past al logaritmo de base 10 where N is the total number

2. local trend measures

   • methods to locate the center point
     • median is represented by the letter M
       • the value that is in the middle of the data is identifield
         • example
     • half
       • media aritmetca ponderada
         • used for the data that is grouped
       • the sum of all data divided into the sum of data
         • example if the data is ungrouped
       • formula
         • applicable only for grouped data
           • weighted arithmetic mean
     • mode
       • the most repeated value within the data
   • this allows us to identify t

3. branch of mathematics to analyse and interpret numerical data

   • frequency the number of times a value is repeated

4. pupulation

   • set of all individuals
     • diferenttial statistics
       • position measurements
         • they are values of the variable that informs us of the place that occupies a data within a set of ordered data
           • Quartiles
             • they are measures that are divided into 4 equal part
           • deciles
             • the are dividen into one ten equal part
           • percentiles
             • they are divided into one hundred equal part

5. variance

   • it allows us to identify the difference in averange that there is each one of the values with respet to the average
     • this average was calculated by squared by adding and dividing them by the amount of difference

6. rank

   • middle range
   • represents the difference between the maximum value and minimum value of the data set by which it shows us how distributed the values are in series
     • differencial statistics methods that make it possible to obtain information about the population
       • stem and leaf diagram
   • It is calculated by finding the maximun divided value in 2
     • the formla is maximum range the minimum of the data in the table

7. deviation

   • it give us a common result between the data and the average
     • to smooth it wide with finding the square root of the variance

8. percentage frequency

9. correlation coefficient

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