Measures of Central Tendency

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10 Terms

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Mode
The most frequent score or observation in a data set.
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Median
The middle score in a sorted data set; if there is an even number of observations, it is the average of the two middle numbers.
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Mean
The average of a data set, calculated by dividing the sum of all scores by the number of scores.
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Outlier
A value significantly higher or lower than the rest of the data points in a data set.
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Trimmed Mean
A mean calculated after removing a specified percentage of the lowest and highest scores to reduce the impact of outliers.
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Central Tendency
A statistical measure that identifies a single score as representative of an entire distribution.
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Nominal Data
Categorical data without a defined order or ranking.
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Extreme Score
A data point that is far removed from other observations and can skew the results of statistical measures.
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Resistance to Outliers
A property of a measure of central tendency that indicates its ability to remain stable despite extreme scores.
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Interval Data
Numerical data where the difference between values is meaningful, but there is no true zero.