Center and spread | Lesson (article) | Khan Academy
https://www.khanacademy.org/test-prep/praxis-math/praxis-math-lessons/gtp--praxis-math--lessons--statistics-and-probability/a/gtp--praxis-math--article--center-and-spread--lesson
WebTwo measures of center are mean and median. Spread describes the variation of the data. Two measures of spread are range and standard deviation. What skills are tested? Calculating the mean, median, and range from a list of values or a data display. Comparing the mean, median, range, and standard deviation of data sets.
DA: 63 PA: 32 MOZ Rank: 35