Measures of central tendency

Measures of central tendency

1. Inform

   • distribution center
     • Statistical sample
     • Population

2. Function

   • location is known
     • The average element

3. Fashion

   • is a set of data that the elements are repel each other frequently
     • the sum of the elements or data that are repel
     • Grouped data

4. Half

   • Average of a set of numbers
     • sum of set of vectors divided by the total number of values
       • • if data (x) is presented with occurs with frequency
           • Formule
         • Grouped data
           • Formule
             • They are grouped in two one column of Xi and another of Fi -Xi
               • Xi
               • Fi - Xi

5. Median

   • is distributed in two and leaves the same same amount in both parts parts
     • When N is odd
       • • First, the data data are cited upward
     • When N is even
     • Grouped data
       • • Lri= real lower limit Ef= sum of the frequencies that are above the marked frequency Vi= value of the interbalance Fm= Frequency of the median

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