Standard Score:
The standard score of an observation is the number of standard deviation units it is above or below the mean. The standard score of an observation is calculated by subtracting the mean from the observation, then dividing by the standard deviation.
Planning on taking an introductory statistics course, but not sure if you need to start at the beginning? Review the course description for each of our introductory statistics courses and estimate which best matches your level, then take the self test for that course. If you get all or almost all the questions correct, move on and take the next test.
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