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12 cards from this deck
A single representative value for a whole dataset
Mode, median, and mean
Value appearing most frequently in a dataset
Middle value when data arranged in order
Sum of all values divided by number of values
sum of numbersnumber of numbers\frac{\text{sum of numbers}}{\text{number of numbers}}number of numberssum of numbers
12(n+1)\frac{1}{2}(n + 1)21(n+1)
Average of the two middle values
Yes, e.g., colours or sports
Affected by unusually high or low values
Multiply each group's mean by group size
Arrange data in order of size
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