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in this lesson youll learn how to standardize your data why do this many real-world data sets youll encounter will often have variables that are measured on different scales for example height might be measured in feet while weight might be measured in pounds this poses a problem because variables on different scales are harder to compare and it may lead you to misinterpret the importance of a particular column that column may appear more important simply because it has larger values than another when in reality it may actually have a very similar distribution to the column with smaller values the solution to this problem is to standardize your data so that all your variables are on the same scale in statistics standardization centers of data sets distribution around the mean of the data and calculates the number of standard deviations away from the mean each point is you can standardize your data by calculating z-scores also known as standard scores z-scores are an extension of wha