In Exercises 1112, find the Euclidean distance between u and v.
Measures of Center - Chapter 3 Math 181, Spring 2016 Measures of center, or measures of central tendency include mean, median, and mode. Mean : the sum of all data values divided by the number of data values th Sample mean: ᵫxi xi the idata n n is the number of data values in the sample th Population mean: ᵫxi xis the idata N N is the number of values in the population th Weighted mean: ᵫ(xiwi xis the data ᵫwi wis the weight of the idata Median : the middle value in an ordered array of data To find the median of a data set: 1. List the data in ascending order (make an ordered array) 2. If the data set contains an ODD number, the median is the middle value 3. If the data set contains an EVEN number, the median is the mean of the two middle values. (note: this means that the median may not be an actual value in the data set) *mean and median are the same in symmetric data Mode: the value in the data set that occurs most often. ● If all of the values occur only once, or an equal number of times, then therenos mode . ● If only one value occurs most often, the data set iunimodal. ● If two values occur