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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 greatest. The mode is the number that occurs most often in a data set.
Learn how to calculate the mean by walking through some basic examples & trying practice problems.
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Review the properties and applications of normal distributions, such as mean, standard deviation, and z-scores, with examples and exercises.
Mean as the balancing point. Missing value given the mean. Impact on median & mean: removing an outlier. Impact on median & mean: increasing an outlier. Effects of shifting, adding, & removing a data point.
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Let's practice finding mean of grouped data.
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There's a mean, the median, and the mode. And in statistics speak, these all can kind of be representative of a data sets or population central tendency or a sample central tendency.