Chapter 11 Statistical Measures

Chapter 11 Statistical Measures

1. Measures of Center

   • Mode
   • Median
   • Mean

2. Measures of Variation

   • Range
   • Quartiles
   • Mean Absolute Deviation

3. Best Measure? pg. 846

   • Mean
     • When no gaps or outliers
   • Median
     • the data have extreme values
       • There are no big gaps in the middle of the data
   • Mode
     • Data have many repeated numbers

4. Mean Absolute Deviation

   • Defintion: the average distance between each data value and the mean
   • describes how much a set of numbers vary from the mean