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Calculating standard deviation step by step - Khan Academy So, really standard deviation is: calculating the difference of each item to the mean, and squaring that value Once you calculate all the values in a different list, you take the mean of that Then, you take the square root of the mean to get your STdev
Language: Meaning and Language (video) | Khan Academy Kate explores the connection between language and meaning This video introduces two ways in which philosophers have answered the question 'what makes a sound or some marks meaningful?' Speaker: Dr Kate Ritche, Assistant Professor of Philosophy, City College of New York