Learn about mean, median, and mode with Khan Academy's comprehensive review of these fundamental concepts in statistics.

The mean (average) of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set. The median is the middle value when a data set is ordered from least to …

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Explore how we can think of the mean as the balancing point of a data distribution. You know how to find the mean by adding up and dividing. In this article, we'll think about the mean as the balancing point. …

Which mean are we talking about in "standard error of the mean"? The question comes up, as there are at least 3 types of means in the question: the actual population parameter, means of every sample, …

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Practice finding the approximate location of the mean and median in histograms and dot plots.

When I was practicing limits, the answer to one of the questions was -∞. Does this mean ¨negative infinity¨? What does ¨negative...