Week 11
The empirical rule postulates that all points in a data set will occur within three standard deviations from the mean.
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Week 10
The median of a data set is the data point in the middle of a set. The median is a good measure for finding the center values of a data set to find a decent "average" or a control group. It is also a useful point of reference for finding outliers. The mode is the data point that occurs most frequently in a set. This is a good measure for seeing the frequency of certain responses in things like experiments or surveys. The mean is the average of a data set. This is a good measure for finding a representative number for the general points of a data set, and also a good method of finding outliers. If the mean doesn't seem right, your set likely has an outlier.