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10 cards from this deck
Numerical information gathered through investigations
Calculations measuring central tendency & dispersion
x̄ = Σx/n (sum of scores ÷ number of scores)
Middle value when scores are arranged in order
Most frequently occurring value in a dataset
Highest value minus lowest value
Average distance of each value from the mean
68% of population
Tail points toward higher scores (most scored low)
Bar charts: separated; histograms: joined together
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