Examlex
Describe the key features one would find in a large urban American city at the end of the nineteenth century.
Sample Variance
A measure of the variability or spread of a sample data set, calculated as the average of the squared differences from the sample mean.
Sample Mean
The mean of a collection of numbers, determined by adding all the values together and then dividing the total by the count of values in the set.
Median
The middle value in a dataset when arranged in ascending or descending order, effectively dividing the dataset into two equal halves.
Central Tendency
A statistical measure that identifies a single value as representative of an entire distribution of data, typically the mean, median, or mode.
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