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in this video well be learning about zet scores and standardization by learning about both of these topics you will learn how to calculate exact proportions using the standard normal distribution what is the standard normal distribution the standard normal distribution is a special type of normal distribution that has a mean of 0 and a standard deviation of 1 because of this the standard normal distribution is always centered at 0 and has intervals that increase by 1 each number on the horizontal axis corresponds to a z-score as zetz core tells us how many standard deviations an observation is from the mean mu for example a z-score of negative 2 tells me that I am 2 standard deviations to the left of the mean and as that score of 1.5 tells me that I am one and a half standard deviations to the right of the mean most importantly a set score allows us to calculate how much area that specific z-score is associated with and we can find out that exact area using something called a z-score
