MATHM | Measures of Variability

• shows the extent to which numerical values tend to spread out over the average.

  Measure of Variation
• the simplest form of measuring the variation of a distribution.

  Range
• Formula for?

  • Range

  
• set of data about the data's mean

  Mean Absolute Value
• Formula for?

  • MAD

  
• Formula for?

  • Sample Variance

  
• Formula for?

  • Population Variance

  
• A small standard deviation (and variance) means a high degree of uniformity in the observations and homogeneity in the distribution

  Variance