Unit 1.6 Vocab

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Descriptive Statistics

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A branch of statistics that involves summarizing and organizing data so it can be easily understood. It includes measures like mean, median, mode, range, and standard deviation.

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Mean

Back

The average of a set of numbers, calculated by dividing the sum of all values by the number of values.

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Median

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The middle value in a list of numbers, which divides the data into two halves. If the list has an even number of observations, the median is the average of the two middle numbers.

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Mode

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The value that appears most frequently in a data set. A set of numbers may have one mode, more than one mode, or no mode at all.

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Range

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The difference between the highest and lowest values in a data set.

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Standard Deviation

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A measure of the amount of variation or dispersion in a set of values. A low standard deviation indicates that the values tend to be close to the mean, while a high standard deviation indicates that the values are spread out over a wider range.

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Statistics

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The science of collecting, analyzing, presenting, and interpreting data.

Front

Variance

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A measure of how much values in a data set differ from the mean. It is the square of the standard deviation.