07.1 Mean, Mode, Median
Part of data analysis is being able to find the following measures of central tendency: mean, mode, median, and range
Many call the mean, the average. But there is more than just one value used to persuade people to their side.
mean: add all values is set and divide by the number of values
mode: the most common value in the set; sometimes there is no value or multiple different common values
median: the number in the middle of the sort list of values; when there is an even number the median is the average of the two middle numbers
range: the difference of the largest and smallest values