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  1. 1. Central Tendency Range and measures of central tendency (mean, median and mode) are values that summarize a set of data. They are useful when analyzing data
  2. 2. Mean: Median:93+79+88+77+92+88+80+3 34, 77,79,80,84,88,88,88,92,934+84+88=803 84+88=172803÷10=80.3 172÷2=86The mean of her test scores The median of this data is 80.3The Mode of Jessica’s Range:test scores would be 88. 93-34=59 The range of this date is 59.