Measurements

Measurements

1. Measures of Central Tendency

   • Is a single value that attempts to describe a set of data by identifying the central position within that set of data.
   • Mean
     • Is the average or norm
       • Formula: Sum of all values over the total number of values
   • Median
     • The middle value
       • Formula: The medium value (when the data is in order)
   • Mode
     • The most frequent value
       • Formula: Most common value

2. Measures of dispersion

   • Range
     • The difference between the lowest and highest value
       • Formula: Find the highest and lowest values. Subtract the lowest value from the highest.
   • The measures that help us to know about the set of the data spread.
   • Mean Deviation
     • Is the mean of the absolute deviations of a set of data about the mean.
       • Formula
   • Variance
     • Is a measure of how far each value in the data set is from the mean.
       • Formula
   • Standard Deviation
     • It is the square root of the variance.
       • Formula

3. Omar Ruíz Sofía Soto

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